The American Civil War happened after decades of regional conflict, focused on the central issue of slavery in America, threatened to split the Union.
A number of events seemed to be pushing the nation closer to war. And following the election of Abraham Lincoln, who was known for his anti-slavery views, slave states began to secede in late 1860 and early 1861. The United States, it's fair to say, had been on the road to Civil War for a long time.
A series of compromises hammered out on Capitol Hill managed to delay the Civil War. There were three major compromises:
The Missouri Compromise managed to postpone settling the issue of slavery for three decades. But as the country grew and new states entered the Union following the Mexican War, the Compromise of 1850 proved to be an unwieldy set of laws with controversial provisions, including the Fugitive Slave Act.
The Kansas-Nebraska Act, the brainchild of powerful Illinois Senator Stephen A. Douglas, was intended to calm emotions. Instead it only made things worse, creating a situation in the West so violent that newspaper editor Horace Greeley coined the term Bleeding Kansas to describe it.
The violence over slavery in Kansas was essentially a small-scale Civil War. In response to the bloodshed in the territory, Senator Charles Sumner of Massachusetts delivered a blistering denunciation of slaveholders in the U.S. Senate chamber in May 1856.
A Congressman from South Carolina, Preston Brooks, was outraged. On May 22, 1856, Brooks, carrying a walking stick, strode into the Capitol and found Sumner seated at his desk in the Senate chamber, writing letters.
Brooks struck Sumner in the head with his walking stick, and continued to rain blows down upon him. As Sumner tried to stagger away, Brooks broke the cane over Sumner's head, nearly killing him.
The bloodshed over slavery in Kansas had reached the U.S. Capitol. Those in the North were appalled by the savage beating of Charles Sumner. In the South, Brooks became a hero and to show support many people sent him walking sticks to replace the one he had broken.
The national debate over slavery was played out in microcosm in the summer and fall of 1858 as Abraham Lincoln, a candidate of the new anti-slavery Republican Party, ran for a U.S. Senate seat held by Stephen A. Douglas in Illinois.
The two candidates held a series of seven debates in towns across Illinois, and the main issue was slavery, specifically whether slavery should be allowed to spread to new territories and states. Douglas was against restricting slavery, and Lincoln developed eloquent and forceful arguments against the spread of slavery.
Lincoln would lose the 1858 Illinois senate election, but the exposure of debating Douglas began to give him a name in national politics.
The fanatical abolitionist John Brown, who had participated in a bloody raid in Kansas in 1856, devised a plot that he hoped would spark a slave uprising across the South.
Brown and a small group of followers seized the federal arsenal at Harpers Ferry, Virginia (now West Virginia) in October 1859. The raid quickly turned into a violent fiasco, and Brown was captured and hanged less than two months later.
In the South, Brown was denounced as a dangerous radical and a lunatic. In the North he was often held up as a hero, with even Ralph Waldo Emerson and Henry David Thoreau paying tribute to him at a public meeting in Massachusetts.
The raid on Harpers Ferry by John Brown may have been a disaster, but it pushed the nation closer to Civil War.
In February 1860 Abraham Lincoln took a series of trains from Illinois to New York City and delivered a speech at Cooper Union. In the speech, which Lincoln wrote after diligent research, he made the case against the spread of slavery.
In an auditorium packed with political leaders and advocates for ending slavery in America, Lincoln became an overnight star in New York. The next day's newspapers ran transcripts of his address, and he was suddenly a contender for the 1860 presidential election.
In the summer of 1860, capitalizing on his success with the Cooper Union address, Lincoln won the Republican nomination for president during the party's convention in Chicago.
The election of 1860 was like no other in American politics. Four candidates, including Lincoln and his perennial opponent Stephen Douglas, split the vote. And Abraham Lincoln was elected president.
As an eerie foreshadowing of what was to come, Lincoln received no electoral votes from southern states. And the slave states, incensed by Lincoln's election, threatened to leave the Union. By the end of the year, South Carolina had issued a document of secession, declaring itself no longer a part of the Union. Other slave states followed early in 1861.
President James Buchanan, who Lincoln would replace in the White House, tried in vain to cope with the secession crisis rocking the nation. As presidents in the 19th century were not sworn in until March 4th of the year following their election, Buchanan, who had been miserable as president anyway, had to spend four agonizing months trying to govern a nation coming apart.
Probably nothing could have kept the Union together. But there was an attempt to hold a peace conference between North and South. And various senators and congressman offered plans for one last compromise.
Despite anyone's efforts, slave states kept seceding, and by the time Lincoln delivered his inaugural address the nation was split and war began to seem more likely.
The crisis over slavery and secession finally became a shooting war when cannons of the newly formed Confederate government began shelling Fort Sumter, a federal outpost in the harbor of Charleston, South Carolina, on April 12, 1861.
The federal troops at Fort Sumter had been isolated when South Carolina had seceded from the Union. The newly formed Confederate government kept insisting that the troops leave, and the federal government refused to give in to the demands.
The attack on Fort Sumter produced no combat casualties. But it inflamed passions on both sides, and it meant the Civil War had started.