what events led to the civil war essay

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9 Events That Led to the Civil War

By: Patrick J. Kiger

Published: January 17, 2023

After the American Revolution , a divide between the North and South began to widen. Industrialized northern states gradually passed laws freeing enslaved people, while southern states became increasingly committed to slavery. Many southerners came to view slavery as a linchpin of their agricultural economy , and as a justifiable social and political institution.

Throughout the first half of the 1800s, the nation struggled to manage the clash between these two incompatible viewpoints, working out deals such as the Missouri Compromise of 1820 , which sought to balance the number of new free and slave states and drew a line through the nation’s western territories, with freedom to the north and slavery to the south. But in the last decade before war broke out, the conflict gained momentum and intensity. 

“Throughout the 1850s, a series of events increased sectionalism, emboldened southern secessionists, and deepened northern resolve to defend the Union and end slavery,” explains Jason Phillips , the Eberly Family Professor of Civil War Studies at West Virginia University, and author of the 2018 book Looming Civil War: How Nineteenth Century Americans Imagined the Future. “Many of these crises revolved around politics, but economic, social and cultural factors also contributed to the war’s origins.”

Here are nine events from the 1850s to the early 1860s that historians view as critical in the march toward the American Civil War .

The Compromise of 1850

In the wake of the Mexican War , tensions developed between the North and South over whether the western land gained by the U.S. should become free or slave territory. Things came to a head when California sought approval to enter the Union as a free state in 1849, which would have upset the balance struck by the Missouri Compromise several decades before. Senator Henry Clay, a Whig from Kentucky, proposed a package of legislation to resolve the disputes, but the Senate—after seven months of discussions—rejected his proposal.

Senator Stephen A. Douglas, a Democrat from Illinois, came up with an alternative proposal that admitted California, established Utah and New Mexico as territories that could decide for themselves whether to permit slavery, defined boundaries for the state of Texas, abolished the slave trade in the District of Columbia, and obligated the entire country to cooperate in the capture and return of escaped slaves. But the deal only postponed the conflict.

“They didn’t really compromise,” says Michael Green , an Associate Professor of History at the University of Nevada, Las Vegas and author of several books on the Civil War era, including Politics and America in Crisis: The Coming of the Civil War and Lincoln and the Election of 1860 . “They just agreed to disagree.”

The Fugitive Slave Act

An existing federal law, enacted by Congress in 1793, allowed local governments to seize and return escaped slaves to their owners, and imposed penalties upon anyone who aided their flight. But the new version included in the Compromise of 1850 went much further, by compelling citizens to assist in capturing escapees, denying the captives the right to a jury trial, and increasing the penalty for anyone aiding their escape. It also put cases in the hands of federal commissioners who got $10 if a fugitive was returned, but only $5 if an alleged slave was determined to be a free Black.

Northern abolitionists rebelled against the law. After 50,000 anti-slavery protesters filled the streets of Boston to protest the arrest of a Black man named Anthony Burns in 1854, President Franklin Pierce sent federal troops to maintain order and provided a Navy ship to return Burns back to Virginia.

“Northerners who had questioned slavery said, ‘We told you so,’ and those who hadn’t thought to themselves, ‘This is going too far,’” says Green. “It’s a radicalizing moment.” As a result, Massachusetts and other free states began passing “personal liberty” laws, which made it difficult and costly for enslavers to prove their cases in court.

'Uncle Tom's Cabin' Is Published

In 1851, author Harriet Beecher Stowe , who was still grieving the loss of her 18-month-old son Samuel to cholera two years earlier, wrote to the publisher of a Washington, D.C.-based abolitionist newspaper, National Era , and offered to write a fictional serial about the cruelty of slavery. Stowe later explained that losing her child helped her to understand “what a poor slave mother may feel when her child is ripped away from her,” according to Stowe biographer Katie Griffiths .

Stowe’s story, published in 41 installments, boosted the paper’s circulation, and a Boston publisher decided to release it as a two-volume novel. Uncle Tom’s Cabin: Or, Life Among the Lowly sold 300,000 copies in its first year, and the vociferous public debate about the book exacerbated the differences between the North and South. Northerners were shocked by the brutal depiction of slavery, which Stowe had synthesized from published autobiographies of slaves and stories she had heard from friends and fugitive Blacks. In turn, “Southerners react noisily to it,” Green explains. “They’re saying, ‘This is terrible. You’re attacking us. You’re all against us.’” When Stowe visited the White House in 1862, President Lincoln asked, “So this is the little lady who made this big war?”

The Kansas-Nebraska Act

In 1854, Senator Douglas, the author of the Compromise of 1850, introduced another piece of legislation “to organize the Territory of Nebraska,” an area that covered not just that present-day state but also Kansas, as well as Montana and the Dakotas, according to the U.S. Senate’s history of the law. Douglas was promoting a transcontinental railroad that would pass through Chicago in his home state. But the envisioned northern route had to pass through the Nebraska territory, a place where slavery was prohibited by the 1820 Missouri Compromise. Rivals, including slave owners, wanted a southern route.

To get what he wanted, Douglas offered a compromise, which would allow settlers in those territories to decide whether to legalize slavery. Massachusetts Senator  Charles Sumner , an opponent of slavery, attacked the proposal for creating “a dreary region of despotism.” Nevertheless it was passed by Congress, with cataclysmic results.

“It re-opened that land to the expansion of slavery, and destroyed a long-established political compromise on the issue of slavery in the West,” Phillips says. Pro-slavery and antislavery activists surged into the territories in an effort to sway the vote, and clashed violently in a conflict that became known as “Bleeding Kansas,” which foreshadowed the Civil War.

The Pottawatomie Massacre

One of those who went to Kansas was a radical abolitionist and religious zealot named John Brown , who had worked as a conductor on the Underground Railroad and founded an organization that helped slaves escape to Canada. Brown moved to Kansas Territory, where in May 1856, he was angered by the destruction of a newspaper office and other property in Lawrence, Kansas by pro-slavery forces. Brown decided retaliation was in order.

At a spot near a crossing on Pottawatomie Creek in Franklin, Kansas, Brown, four of his sons and several others lured five proslavery men out of their houses with a promise that they would not be harmed, and then slashed and stabbed them with a saber and shot them in the head, according to a contemporary account of the attack. Brown’s brutality was denounced by Southern newspapers and by some Northern ones as well, and it “aroused emotions and distrust on both sides,” as an article from the Kansas Historical Society notes. The fighting in Kansas continued for another two years.

The Dred Scott Decision

Dred Scott , an enslaved man, was born in Virginia and later lived in Alabama and Missouri. In 1831, his original enslaver died, and he was purchased by a U.S. Army surgeon named John Emerson. Emerson took him to the free state of Illinois and also Wisconsin, a territory where slavery was illegal due to the Missouri Compromise. During that time, Scott married and he and his wife had four children. In 1843, Emerson died, and several years after that, Scott and his wife sued Emerson’s widow in federal court for their freedom on the grounds that they had lived in free territory.

Scott, who was assisted financially by the family of his original owner, endured years of litigation until the case reached the U.S. Supreme Court. In an 1857 decision written by Chief Justice Roger Taney, the court decided that Scott was not entitled to U.S. citizenship and the protection of law, no matter where he had lived. In the court’s view, the Constitution’s framers had not intended for Black people to be free, but instead viewed them as property, with “no rights which the white man was bound to respect.” The ruling made further political compromise too difficult.

John Brown's Raid on Harper's Ferry

Brown dreamed of carrying out an even bigger attack, one that would ignite a mass uprising of Southern enslaved people. On a night in October 1859, he and a band of 22 men launched a raid on Harpers Ferry , a town in what is now West Virginia, and captured some prominent local citizens and seized the federal arsenal there. His small force soon was counterattacked by local militia, forcing him to seek refuge. The following afternoon, U.S. Marines under the command of then-Col. Robert E. Lee arrived and stormed the arsenal, killing many of Brown’s men and capturing him. Brown was tried and charged with treason, murder and slave insurrection, and sentenced to death. He was hanged in December 1859. While the attack failed to trigger the widespread revolt he envisioned, it drove the North and South even further apart.

“Northern abolitionists who preferred pacificism praised Brown as a martyr to the cause of freedom and even helped to finance his attack,” Phillips explains. “Southerners expected more acts of terrorism and prepared by bolstering their militias.” In many respects, Brown’s raid could be viewed as the first battle of the Civil War, he says.

The Election of 1860

Abraham Lincoln , a self-taught lawyer who had served a single term in Congress, emerged in the mid-1850s as an articulate and persuasive critic of slavery, and achieved national prominence with a series of debates against Senator Stephen Douglas in an unsuccessful campaign for Douglas’s seat. When the Republican Party held a convention to nominate a presidential candidate, the chosen location of Chicago gave Lincoln a home-court advantage over more experienced politicians such as Senator William H. Seward of New York.

“When they set up the convention floor, they put Illinois in a spot where they could get to the other delegations that were less committed,” Green says. “The New York delegation, which was supporting Seward, was put in a corner where they couldn’t get out.” That made it difficult for them to negotiate and persuade others to support their candidate. In the general election, Lincoln caught more lucky breaks. After the Democrats were unable to decide upon a candidate, southern Democrats nominated John C. Breckenridge of Kentucky, while northerners nominated Douglas. Breckenridge and Constitutional Party Candidate John Bell split the South, while Lincoln swept the northeastern and midwestern states except for Missouri (which went to Douglas), as well as Oregon and California to win the presidency despite getting just 40 percent of the vote. “For the first time, the Electoral College worked against the South,” Green explains.

The Formation of the Confederacy

The election of the first U.S. president who was a vocal opponent of slavery came as a shock to Southerners. “Now, there is going to be someone in the White House who is not going to do what the South says it wants done, reflexively,” Green explains. “Their feeling is, no matter what Lincoln says about protecting our rights, he’s not going to do that. We don’t trust him. He’s been elected by people who are out to get us.”

Less than six weeks after the election, the first secession convention met in Charleston South Carolina. About 60 percent of the 169 delegates were slave owners, and they voted unanimously to leave the Union . Local residents celebrated with bonfires, parades and the ringing of church bells. Five more states—Mississippi, Florida, Alabama, Georgia and Louisiana—soon followed. Representatives from those six states met in February 1861 to establish a unified government, which they called the Confederate States of America . Jefferson Davis of Mississippi was elected as Confederate President. Texas joined in March. 

After Confederate forces attacked Fort Sumter in April and Lincoln called for federal forces to retake it, four more states—Virginia, Arkansas, North Carolina and Tennessee—left the union and joined the Confederacy as well.

Though the Confederacy’s leaders didn’t realize it, they actually were hastening the end of what they sought to protect. “Had they stayed, slavery as an institution almost certainly would have survived much longer,” Green says.

Instead, a four-year, bloody war devastated much of the South, took the lives of more than 650,000 from both sides, and led to the emancipation of more than 3.9 million enslaved Black Americans, in addition to changing the nation in numerous other ways.

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Trigger Events of the Civil War

The Civil War was the culmination of a series of confrontations concerning the institution of slavery. The following is a timeline of the events that led to the Civil War.​

1619-1865 | The Peculiar Institution

Slavery arrived in North America along side the Spanish and English colonists of the 17th and 18th centuries, with an estimated 645,000 Africans imported during the more than 250 years the institution was legal.  But slavery never existed without controversy. The British colony of Georgia actually banned slavery from 1735 to 1750, although it remained legal in the other 12 colonies. After the American Revolution, northern states one by one passed emancipation laws, and the sectional divide began to open as the South became increasingly committed to slavery. Once called a “necessary evil” by Thomas Jefferson, proponents of slavery increasingly switched their rhetoric to one that described slavery as a benevolent Christian institution that benefited all parties involved: slaves, slave owners, and non-slave holding whites. The number of slaves compared to number of free blacks varied greatly from state to state in the southern states. In 1860, for example, both Virginia and Mississippi had in excess of 400,000 slaves, but the Virginia population also included more than 58,000 free blacks, as opposed to only 773 in Mississippi. In 1860, South Carolina was the only state to have a majority slave population, yet in all southern states slavery served as the foundation for their socioeconomic and political order.

1820 | The Missouri Compromise

In the growth years following the 1803 Louisiana Purchase, Congress was compelled to establish a policy to guide the expansion of slavery into the new western territory.  Missouri’s application for statehood as a slave state sparked a bitter national debate.  In addition to the deeper moral issue posed by the growth of slavery, the addition of pro-slavery Missouri legislators would give the pro-slavery faction a Congressional majority.  

Ultimately, Congress reached a series of agreements that became known as the Missouri Compromise .  Missouri was admitted as a slave state and Maine was admitted as a free state, preserving the Congressional balance.  A line was also drawn through the unincorporated western territories along the 36°30' parallel, dividing north and south as free and slave.  

Thomas Jefferson, upon hearing of this deal, “considered it at once as the knell of the Union.  It is hushed indeed for the moment.  But this is a reprieve only, not a final sentence. A geographical line, coinciding with a marked principle, moral and political, once conceived and held up to the angry passions of men, will never be obliterated; and every new irritation will mark it deeper and deeper.”

1831 | Nat Turner’s Rebellion

In August of 1831, a slave named Nat Turner incited an uprising that spread through several plantations in southern Virginia.  Turner and approximately seventy cohorts killed around sixty white people.  The deployment of militia infantry and artillery suppressed the rebellion after two days of terror.  

Fifty-five slaves, including Turner, were tried and executed for their role in the insurrection.  Nearly two hundred more were lynched by frenzied mobs.  Although small-scale slave uprisings were fairly common in the American South, Nat Turner’s rebellion was the bloodiest.

Virginia lawmakers reacted to the crisis by rolling back what few civil rights slaves and free black people possessed at the time.  Education was prohibited and the right to assemble was severely limited.  

1846 - 1850 | The Wilmot Proviso

The Wilmot Proviso was a piece of legislation proposed by David Wilmot (D-FS-R PA) at the close of the Mexican-American War.  If passed, the Proviso would have outlawed slavery in territory acquired by the United States as a result of the war, which included most of the Southwest and extended all the way to California.  

Wilmot spent two years fighting for his plan.  He offered it as a rider on existing bills, introduced it to Congress on its own, and even tried to attach it to the Treaty of Guadalupe Hidalgo .  All attempts failed.  Nevertheless, the intensity of the debate surrounding the Proviso prompted the first serious discussions of secession.

1850 | The Compromise of 1850

With national relations soured by the debate over the Wilmot Proviso, senators Henry Clay and Stephen Douglas managed to broker a shaky accord with the Compromise of 1850 .  The compromise admitted California as a free state and did not regulate slavery in the remainder of the Mexican cession all while strengthening the Fugitive Slave Act , a law which compelled Northerners to seize and return escaped slaves to the South.

While the agreement succeeded in postponing outright hostilities between the North and South, it did little to address, and in some ways even reinforced, the structural disparity that divided the United States.  The new Fugitive Slave Act, by forcing non-slaveholders to participate in the institution, also led to increased polarization among centrist citizens.  

1852 | Uncle Tom’s Cabin

Harriet Beecher Stowe ’s fictional exploration of slave life was a cultural sensation.  Northerners felt as if their eyes had been opened to the horrors of slavery, while Southerners protested that Stowe’s work was slanderous.  

Uncle Tom’s Cabin was the second-best-selling book in America in the 19th century, second only to the Bible.  Its popularity brought the issue of slavery to life for those few who remained unmoved after decades of legislative conflict and widened the division between North and South.

1854 - 1859 | Bleeding Kansas

The Kansas-Nebraska Act of 1854 established Kansas and Nebraska as territories and set the stage for “Bleeding Kansas” by its adoption of popular sovereignty. Under popular sovereignty, it is the residents of the territories who decide by popular referendum if the state is to be a free or enslaved. Settlers from the North and the South poured into Kansas, hoping to swell the numbers on their side of the debate.  Passions were enflamed and violence raged. In the fall of 1855, abolitionist John Brown came to Kansas to fight the forces of slavery. In response to the sacking of Lawrence by border ruffians from Missouri whose sole victim was an abolitionist printing press, Brown and his supporters killed five pro-slavery settlers in the Pottawatomie Creek Massacre in Kansas in May, 1856. Violence existed in the territory as early as 1855 but the Sack of Lawrence and the Pottawatomie Creek Massacre launched a guerilla war between pro-slavery and anti-slavery forces. Although the violence was often sporadic and unorganized, mass feelings of terror existed in the territory. Although President Buchanan tried to calm the violence by supporting the Lecompton Constition, his relentless support for this consitution created a political crisis among the Democratic Party and only further aggravated sectional tensions. The violence subsided in 1859, the warring parties forged a fragile peace, but not before more than 50 settlers had been killed.

1857 | Dred Scott v. Sanford

Dred Scott was a Virginia slave who tried to sue for his freedom in court.  The case eventually rose to the level of the Supreme Court, where the justices found that, as a slave, Dred Scott was a piece of property that had none of the legal rights or recognitions afforded to a human being.  

The Dred Scott Decision threatened to entirely recast the political landscape that had thus far managed to prevent civil war.  The classification of slaves as mere property made the federal government’s authority to regulate the institution much more ambiguous.

Southerners renewed their challenges to the agreed-upon territorial limitations on slavery and polarization intensified.  

1858 | Lincoln-Douglas Debates

In 1858, Democratic Senator Stephen Dougla s faced a challenge for his seat from a relatively unknown one term former congressmen and “prairie lawyer” Abraham Lincoln. In the campaign that followed Lincoln and Douglas engaged in seven public debates across the state of Illinois where they debated the most controversial issue of the antebellum era: slavery. Although Douglas won the senate race, these debates propelled Lincoln to the national spotlight and enabled his nomination for president in 1860. In contrast, these debates further alienated Douglas from the southern wing of the Democratic Party and the arguments Douglas made in these debates come back to haunt him in 1860 destroying his presidential chances.  

1859 | John Brown’s Raid

Abolitionist John Brown supported violent action against the South to end slavery and played a major role in starting the Civil War. After the Pottawatomie Massacre during Bleeding Kansas, Brown returned to the North and plotted a far more threatening act. In October 1859, he and 19 supporters, armed with “Beecher’s Bibles,” led a raid on the federal armory and arsenal at Harpers Ferry, Virginia, in an effort to capture and confiscate the arms located there, distribute them among local slaves and begin armed insurrection. A small force of U.S. Marines, led by Col. Robert E. Lee , put down the uprising. There were casualties on both sides; seven people were killed and at least 10 more were injured before Brown and seven of his remaining men were captured.  On October 27, Brown was tried for treason against the state of Virginia, convicted and hanged in Charles Town on December 2.

1860 | Abraham Lincoln’s Election

Abraham Lincoln was elected by a considerable margin in 1860 despite not being included on many Southern ballots.  As a Republican, his party’s anti-slavery outlook struck fear into many Southerners.  

On December 20, 1860, a little over a month after the polls closed, South Carolina seceded from the Union.  Six more states followed by the spring of 1861.  

1861 | The Battle of Fort Sumter

With secession, several federal forts, including Fort Sumter in South Carolina, suddenly became outposts in a foreign land.  Abraham Lincoln made the decision to send fresh supplies to the beleaguered garrisons.  

On April 12, 1861, Confederate warships turned back the supply convoy to Fort Sumter and opened a 34-hour bombardment on the stronghold.  The garrison surrendered on April 14.  

The Civil War was now underway.  On April 15, Lincoln called for 75,000 volunteers to join the Northern army.  Unwilling to contribute troops, Virginia, Arkansas, North Carolina, and Tennessee dissolved their ties to the federal government.

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American history: The Civil War (1861-1865) Essay

Introduction, the civil war, northern versus southern interests, causes of the civil war, aftermath of the civil war.

Bibliography

American history is considered as the most inquisitive worldwide. Traditionally, American history started by a declaration of independence in the year 1776. This declaration was due to threats of British government towards American self-governed system. Declaration of independence led to war in 1775 that was to liberate Americans.

With help of France in providing military and financial support, the patriots won American Revolution. In 1789, war hero George Washington became the first president of federal government by virtue of constitution. With influence of European community, coping with scope of central government proved to be a challenging issue for American people.

In 1790s, creation of political parties was initiated and later fighting for the second independence in 1812. Consequently, this brought about expansion of US territory westwards. With this, the US managed to overcome modernizers who were solely interested in deepening its economy rather than helping American people in expanding their geography.

Heavy demand for cotton in southern states encouraged slavery of Africans even though it was illegal in northern states. In 1860, came the election of Abraham Lincoln as president and this triggered a crisis in slave states as he dejected the expansion of slave trade. Amongst the slave states, some of them seceded in forming the Confederate States of America in 1861. This brought about American Civil War, which was from 1861 to 1865. [1]

In the American history, Civil War is the most momentous event that ever happened in the US. This iconic event redefined the American nation, as it was a fight that aimed at preserving the Union, which was the United States of America. From inauguration of the Constitution, differing opinions existed on the role of federal government.

It was a belief of Federalists that in order to ensure the union does not collapse, there was need for the federal government to hold on to power. Anti-federalists on the other hand, were of the opinion that sovereignty of the new states were to remain within their countries. Anti-federalists believed that each state had the right to determine their own set of laws and it is not right to indict them in following mandates of the federal government. [2]

With the advent of the slavery, Northern states completely squared off against Southern states. The main reason for this being economic interests of north and south which were opposed to each other. In addition, Southerners largely depended on large-scale plantations of cotton, which was more labor intensive.

On the other hand, northerners were more of a manufacturing region who produced finished goods by making use of raw materials. Southern ingrained culture of the plantation era encouraged slavery because it gave them an inexpensive labor source. The compromise of each group was the fear that one could gain an unequal amount of power. For example, northerners feared that if more slave states existed, then they would garner an unequal power in the nation. [3]

Causes of the American Civil war, which claimed of over 618,000 casualties, are traceable back to early days in history of the US when tensions escalated. The main cause was difference in economic and social capabilities between the North and the South. The south mainly depended on cotton, which meant the urgent need for cheap labor most probably slaves, as they become one crop economy. On the other hand, northerners depended solely on industrial products.

This disparity, which existed between the two, was the major difference in their economies. The second cause was due to the infighting between those who favored states’ rights and those who favored federal rights. Emergence of these two camps that had differences in opinions ignited the war.

Third, the American Civil war was caused by in-fight between those who were proponents of slavery and those who were against slavery. Another cause of the American Civil war was the growth of the abolition movement. The fact that northerners were against slavery led to the increase of abolitionists who were against slaveholders. Lastly, when Abraham Lincoln was elected as president, it catalyzed the civil war, as southerners believed that he favored interests of the northerners because he was against slavery. [4]

Surrender of General Robert E. Lee on April 9, 1865 marked an end to the confederacy era. However, this did not stop the war completely as some small battles continued to occur. This was later to end when the last general, Stand Watie, surrendered on June 23, 1865.

Abraham Lincoln’s vision of reconstructing the nation did not bear much fruit as it failed to become a reality because of his assassination on April 14, 1865. The Radical Republicans imposed military rule on the southerners dealing with them harshly until Rutherford B. Hayes ended it in 1876. In the American history, Civil War is a watershed event and most importantly an event that officially ended slavery. [5]

In conclusion, the Civil War was an important event in history of the American people. Moreover, its iconic stature is very vital, as the proponents who were against slavery became victors because their wish of anti-slavery was satisfied. In addition, it helped in liberating the people who had different opinions and gave them reasons to live for better ideals. [6]

Foner, Eric. The Fiery Trial: Abraham Lincoln and American Slavery . New York: W.W. Norton, 2010.

Kelly Martin. “ Overview of the American Civil War-Secession. ” About. Web.

Kelly Martin. “Top Five Causes of the Civil War: Leading up to Secession and the Civil War.” About. Web.

The History Channel. “ American Civil War. ” History. Web.

• Eric Foner, The Fiery Trial: Abraham Lincoln and American Slavery (New York: W.W. Norton, 2010), 74.
• Eric Foner, The Fiery Trial: Abraham Lincoln and American Slavery (New York: W.W. Norton, 2010), 74
• The History Channel, “American Civil War,” History.com.
• Martin Kelly, “Top Five Causes of the Civil War: Leading up to Secession and the Civil War,” About.com.
• Martin Kelly, “Overview of the American Civil War-Secession,” About.com .
• Chicago (A-D)
• Chicago (N-B)

IvyPanda. (2020, January 11). American history: The Civil War (1861-1865). https://ivypanda.com/essays/american-history-the-civil-war-1861-1865/

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IvyPanda . "American history: The Civil War (1861-1865)." January 11, 2020. https://ivypanda.com/essays/american-history-the-civil-war-1861-1865/.

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What Were the Top 4 Causes of the Civil War?

• M.A., History, University of Florida
• B.A., History, University of Florida

The question “what caused the U.S. Civil War ?” has been debated since the horrific conflict ended in 1865. As with most wars, however, there was no single cause.

Pressing Issues That Led to the Civil War

The Civil War erupted from a variety of long-standing tensions and disagreements about American life and politics. For nearly a century, the people and politicians of the Northern and Southern states had been clashing over the issues that finally led to war: economic interests, cultural values, the power of the federal government to control the states, and, most importantly, slavery in American society.

While some of these differences might have been resolved peacefully through diplomacy, the institution of slavery was not among them.

With a way of life steeped in age-old traditions of white supremacy and a mainly agricultural economy that depended on the labor of enslaved people, the Southern states viewed enslavement as essential to their very survival.

Slavery in the Economy and Society

At the time of the Declaration of Independence in 1776, the enslavement of people not only remained legal in all 13 British American colonies, but it also continued to play a significant role in their economies and societies.

Prior to the American Revolution, the institution of slavery in America had become firmly established as being limited to persons of African ancestry. In this atmosphere, the seeds of white supremacy were sown.

Even when the U.S. Constitution was ratified in 1789, very few Black people and no enslaved people were allowed to vote or own property.

However, a growing movement to abolish slavery had led many Northern states to enact abolitionist laws and abandon enslavement. With an economy based more on industry than agriculture, the North enjoyed a steady flow of European immigrants. As impoverished refugees from the potato famine of the 1840s and 1850s, many of these new immigrants could be hired as factory workers at low wages, thus reducing the need for enslaved people in the North.

In the Southern states, longer growing seasons and fertile soils had established an economy based on agriculture fueled by sprawling plantations owned by White people that depended on enslaved people to perform a wide range of duties.

When Eli Whitney invented the cotton gin in 1793, cotton became very profitable. This machine was able to reduce the time it took to separate seeds from the cotton. At the same time, the increase in the number of plantations willing to move from other crops to cotton created an even greater need for enslaved people. The Southern economy became a one-crop economy, depending on cotton and, therefore, on enslaved people.

Though it was often supported throughout the social and economic classes, not every White Southerner enslaved people. The population of the pro-slavery states was around 9.6 million in 1850   and only about 350,000 were enslavers.   This included many of the wealthiest families, a number of whom owned large plantations. At the start of the Civil War, at least 4 million enslaved people   were forced to live and work on the Southern plantations.

In contrast, industry ruled the economy of the North and less emphasis was on agriculture, though even that was more diverse. Many Northern industries were purchasing the South's raw cotton and turning it into finished goods.

This economic disparity also led to irreconcilable differences in societal and political views.

In the North, the influx of immigrants—many from countries that had long since abolished slavery—contributed to a society in which people of different cultures and classes lived and worked together.

The South, however, continued to hold onto a social order based on white supremacy in both private and political life, not unlike that under the rule of racial apartheid that persisted in South Africa for decades .

In both the North and South, these differences influenced views on the powers of the federal government to control the economies and cultures of the states.

States and Federal Rights

Since the time of the American Revolution , two camps emerged when it came to the role of government. Some people argued for greater rights for the states and others argued that the federal government needed to have more control.

The first organized government in the U.S. after the Revolution was under the Articles of Confederation. The 13 states formed a loose Confederation with a very weak federal government. However, when problems arose, the weaknesses of the Articles caused the leaders of the time to come together at the Constitutional Convention and create, in secret, the U.S. Constitution .

Strong proponents of states rights like Thomas Jefferson and Patrick Henry were not present at this meeting. Many felt that the new Constitution ignored the rights of states to continue to act independently. They felt that the states should still have the right to decide if they were willing to accept certain federal acts.

This resulted in the idea of nullification , whereby the states would have the right to rule federal acts unconstitutional. The federal government denied states this right. However, proponents such as John C. Calhoun —who resigned as vice president to represent South Carolina in the Senate—fought vehemently for nullification. When nullification would not work and many of the Southern states felt that they were no longer respected, they moved toward thoughts of secession.

Pro-slavery States and Free States

As America began to expand—first with the lands gained from the Louisiana Purchase and later with the Mexican War —the question arose of whether new states would be pro-slavery states or free states. An attempt was made to ensure that equal numbers of free states and pro-slavery states were admitted to the Union, but over time this proved difficult.

The Missouri Compromise passed in 1820. This established a rule that prohibited enslavement in states from the former Louisiana Purchase north of the latitude 36 degrees 30 minutes, with the exception of Missouri.

During the Mexican War, the debate began about what would happen with the new territories the U.S. expected to gain upon victory. David Wilmot proposed the Wilmot Proviso in 1846, which would ban enslavement in the new lands. This was shot down amid much debate.

The Compromise of 1850 was created by Henry Clay and others to deal with the balance between pro-slavery states and free states. It was designed to protect both Northern and Southern interests. When California was admitted as a free state, one of the provisions was the Fugitive Slave Act . This held individuals responsible for harboring freedom-seeking enslaved people, even if they were located in free states.

The  Kansas-Nebraska Act of 1854 was another issue that further increased tensions. It created two new territories that would allow the states to use popular sovereignty to determine whether they would be free states or pro-slavery states. The real issue occurred in Kansas where pro-slavery Missourians, called "Border Ruffians," began to pour into the state in an attempt to force it toward slavery.

Problems came to a head with a violent clash at Lawrence, Kansas. This caused it to become known as " Bleeding Kansas ." The fight even erupted on the floor of the Senate when anti-slavery proponent Sen. Charles Sumner of Massachusetts was beaten on the head by South Carolina Sen. Preston Brooks.

The Abolitionist Movement

Increasingly, Northerners became more polarized against enslavement. Sympathies began to grow for abolitionists and against enslavement and enslavers. Many in the North came to view enslavement as not just socially unjust, but morally wrong.

The abolitionists came with a variety of viewpoints. People such as William Lloyd Garrison and Frederick Douglass wanted immediate freedom for all enslaved people. A group that included Theodore Weld and Arthur Tappan advocated for emancipating enslaved people slowly. Still others, including Abraham Lincoln, simply hoped to keep slavery from expanding.

A number of events helped fuel the cause for abolition in the 1850s.  Harriet Beecher Stowe  wrote " Uncle Tom's Cabin ," a popular novel that opened many eyes to the reality of enslavement. The Dred Scott Case  brought the issues of enslaved peoples' rights, freedom, and citizenship to the Supreme Court.

Additionally, some abolitionists took a less peaceful route to fighting against slavery. John Brown and his family fought on the anti-slavery side of "Bleeding Kansas." They were responsible for the Pottawatomie Massacre, in which they killed five settlers who were pro-slavery. Yet, Brown's best-known fight would be his last when the group attacked Harper's Ferry in 1859, a crime for which he would hang.

The Election of Abraham Lincoln

The politics of the day were as stormy as the anti-slavery campaigns. All of the issues of the young nation were dividing the political parties and reshaping the established two-party system of Whigs and Democrats.

The Democratic party was divided between factions in the North and South. At the same time, the conflicts surrounding Kansas and the Compromise of 1850 transformed the Whig party into the Republican party (established in 1854). In the North, this new party was seen as both anti-slavery and for the advancement of the American economy. This included the support of industry and encouraging homesteading while advancing educational opportunities. In the South, Republicans were seen as little more than divisive.

The presidential election of 1860 would be the deciding point for the Union. Abraham Lincoln represented the new Republican Party and Stephen Douglas , the Northern Democrat, was seen as his biggest rival. The Southern Democrats put John C. Breckenridge on the ballot. John C. Bell represented the Constitutional Union Party, a group of conservative Whigs hoping to avoid secession.

The country's divisions were clear on Election Day. Lincoln won the North, Breckenridge the South, and Bell the border states. Douglas won only Missouri and a portion of New Jersey. It was enough for Lincoln to win the popular vote, as well as 180 electoral votes .

Even though things were already near a boiling point after Lincoln was elected, South Carolina issued its "Declaration of the Causes of Secession " on December 24, 1860. They believed that Lincoln was anti-slavery and in favor of Northern interests.

President James Buchanan's administration did little to quell the tension or stop what would become known as " Secession Winter ." Between Election Day and Lincoln's inauguration in March, seven states seceded from the Union: South Carolina, Mississippi, Florida, Alabama, Georgia, Louisiana, and Texas.

In the process, the South took control of federal installations, including forts in the region, which would give them a foundation for war. One of the most shocking events occurred when one-quarter of the nation's army surrendered in Texas under the command of General David E. Twigg. Not a single shot was fired in that exchange, but the stage was set for the bloodiest war in American history.

Edited by Robert Longley

DeBow, J.D.B. "Part II: Population." Statistical View of the United States, Compendium of the Seventh Census . Washington: Beverley Tucker, 1854. 

De Bow, J.D.B. " Statistical view of the United States in 1850 ." Washington: A.O.P. Nicholson. 

Kennedy, Joseph C.G. Population of the United States 1860: Compiled from the Original Returns of the 8th Census . Washington DC: Government Printing Office, 1864.

• Order of Secession During the American Civil War
• American Civil War: Causes of Conflict
• Slavery in 19th Century America
• The Hoax That a Tariff Provoked the Civil War
• Did Uncle Tom's Cabin Help to Start the Civil War?
• The American Civil War and Secession
• The Road to the Civil War
• The Kansas-Nebraska Act of 1854
• American History Timeline 1851–1860
• U.S. Legislative Compromises Over Enslavement, 1820–1854
• Top 9 Events That Led to the Civil War
• Bleeding Kansas
• Abolitionist Pamphlet Campaign
• The Abolitionists
• The Compromise of 1850 Delayed the Civil War For a Decade
• The Crittenden Compromise to Prevent the Civil War

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What to know about the crisis of violence, politics and hunger engulfing Haiti

A long-simmering crisis over Haiti’s ability to govern itself, particularly after a series of natural disasters and an increasingly dire humanitarian emergency, has come to a head in the Caribbean nation, as its de facto president remains stranded in Puerto Rico and its people starve and live in fear of rampant violence. 

The chaos engulfing the country has been bubbling for more than a year, only for it to spill over on the global stage on Monday night, as Haiti’s unpopular prime minister, Ariel Henry, agreed to resign once a transitional government is brokered by other Caribbean nations and parties, including the U.S.

But the very idea of a transitional government brokered not by Haitians but by outsiders is one of the main reasons Haiti, a nation of 11 million, is on the brink, according to humanitarian workers and residents who have called for Haitian-led solutions. 

“What we’re seeing in Haiti has been building since the 2010 earthquake,” said Greg Beckett, an associate professor of anthropology at Western University in Canada. 

What is happening in Haiti and why?

In the power vacuum that followed the assassination of democratically elected President Jovenel Moïse in 2021, Henry, who was prime minister under Moïse, assumed power, with the support of several nations, including the U.S. 

When Haiti failed to hold elections multiple times — Henry said it was due to logistical problems or violence — protests rang out against him. By the time Henry announced last year that elections would be postponed again, to 2025, armed groups that were already active in Port-au-Prince, the capital, dialed up the violence.

Even before Moïse’s assassination, these militias and armed groups existed alongside politicians who used them to do their bidding, including everything from intimidating the opposition to collecting votes . With the dwindling of the country’s elected officials, though, many of these rebel forces have engaged in excessively violent acts, and have taken control of at least 80% of the capital, according to a United Nations estimate. 

Those groups, which include paramilitary and former police officers who pose as community leaders, have been responsible for the increase in killings, kidnappings and rapes since Moïse’s death, according to the Uppsala Conflict Data Program at Uppsala University in Sweden. According to a report from the U.N . released in January, more than 8,400 people were killed, injured or kidnapped in 2023, an increase of 122% increase from 2022.

“January and February have been the most violent months in the recent crisis, with thousands of people killed, or injured, or raped,” Beckett said.

Armed groups who had been calling for Henry’s resignation have already attacked airports, police stations, sea ports, the Central Bank and the country’s national soccer stadium. The situation reached critical mass earlier this month when the country’s two main prisons were raided , leading to the escape of about 4,000 prisoners. The beleaguered government called a 72-hour state of emergency, including a night-time curfew — but its authority had evaporated by then.

Aside from human-made catastrophes, Haiti still has not fully recovered from the devastating earthquake in 2010 that killed about 220,000 people and left 1.5 million homeless, many of them living in poorly built and exposed housing. More earthquakes, hurricanes and floods have followed, exacerbating efforts to rebuild infrastructure and a sense of national unity.

Since the earthquake, “there have been groups in Haiti trying to control that reconstruction process and the funding, the billions of dollars coming into the country to rebuild it,” said Beckett, who specializes in the Caribbean, particularly Haiti. 

Beckett said that control initially came from politicians and subsequently from armed groups supported by those politicians. Political “parties that controlled the government used the government for corruption to steal that money. We’re seeing the fallout from that.”

Many armed groups have formed in recent years claiming to be community groups carrying out essential work in underprivileged neighborhoods, but they have instead been accused of violence, even murder . One of the two main groups, G-9, is led by a former elite police officer, Jimmy Chérizier — also known as “Barbecue” — who has become the public face of the unrest and claimed credit for various attacks on public institutions. He has openly called for Henry to step down and called his campaign an “armed revolution.”

But caught in the crossfire are the residents of Haiti. In just one week, 15,000 people have been displaced from Port-au-Prince, according to a U.N. estimate. But people have been trying to flee the capital for well over a year, with one woman telling NBC News that she is currently hiding in a church with her three children and another family with eight children. The U.N. said about 160,000 people have left Port-au-Prince because of the swell of violence in the last several months. 

Deep poverty and famine are also a serious danger. Gangs have cut off access to the country’s largest port, Autorité Portuaire Nationale, and food could soon become scarce.

Haiti's uncertain future

A new transitional government may dismay the Haitians and their supporters who call for Haitian-led solutions to the crisis. 

But the creation of such a government would come after years of democratic disruption and the crumbling of Haiti’s political leadership. The country hasn’t held an election in eight years. 

Haitian advocates and scholars like Jemima Pierre, a professor at the University of British Columbia, Vancouver, say foreign intervention, including from the U.S., is partially to blame for Haiti’s turmoil. The U.S. has routinely sent thousands of troops to Haiti , intervened in its government and supported unpopular leaders like Henry.

“What you have over the last 20 years is the consistent dismantling of the Haitian state,” Pierre said. “What intervention means for Haiti, what it has always meant, is death and destruction.”

In fact, the country’s situation was so dire that Henry was forced to travel abroad in the hope of securing a U.N. peacekeeping deal. He went to Kenya, which agreed to send 1,000 troops to coordinate an East African and U.N.-backed alliance to help restore order in Haiti, but the plan is now on hold . Kenya agreed last October to send a U.N.-sanctioned security force to Haiti, but Kenya’s courts decided it was unconstitutional. The result has been Haiti fending for itself. 

“A force like Kenya, they don’t speak Kreyòl, they don’t speak French,” Pierre said. “The Kenyan police are known for human rights abuses . So what does it tell us as Haitians that the only thing that you see that we deserve are not schools, not reparations for the cholera the U.N. brought , but more military with the mandate to use all kinds of force on our population? That is unacceptable.”  

Henry was forced to announce his planned resignation from Puerto Rico, as threats of violence — and armed groups taking over the airports — have prevented him from returning to his country.  

Now that Henry is to stand down, it is far from clear what the armed groups will do or demand next, aside from the right to govern. 

“It’s the Haitian people who know what they’re going through. It’s the Haitian people who are going to take destiny into their own hands. Haitian people will choose who will govern them,” Chérizier said recently, according to The Associated Press .

Haitians and their supporters have put forth their own solutions over the years, holding that foreign intervention routinely ignores the voices and desires of Haitians. 

In 2021, both Haitian and non-Haitian church leaders, women’s rights groups, lawyers, humanitarian workers, the Voodoo Sector and more created the Commission to Search for a Haitian Solution to the Crisis . The commission has proposed the “ Montana Accord ,” outlining a two-year interim government with oversight committees tasked with restoring order, eradicating corruption and establishing fair elections. 

For more from NBC BLK, sign up for our weekly newsletter .

CORRECTION (March 15, 2024, 9:58 a.m. ET): An earlier version of this article misstated which university Jemima Pierre is affiliated with. She is a professor at the University of British Columbia, Vancouver, not the University of California, Los Angeles, (or Columbia University, as an earlier correction misstated).

Patrick Smith is a London-based editor and reporter for NBC News Digital.

Char Adams is a reporter for NBC BLK who writes about race.