Abraham Lincoln received only 40% of the popular vote in the 1860 election, highlighting the deep divisions in the country on the eve of the Civil War.

Abraham Lincoln's victory in 1860 sparked Southern secession—even before his inauguration

Abraham Lincoln's election on an antislavery expansion platform convinced many Southerners that their way of life was under threat. Within three months, seven states seceded from the Union—forming the Confederacy—before Lincoln took office in March 1861.

The Lincoln-Douglas debates sharpened the national divide over slavery

In 1858, Abraham Lincoln and Senator Stephen Douglas debated while competing for an Illinois Senate seat. Their seven debates, reprinted nationwide, brought the question of slavery to the forefront—further polarizing the country and propelling Lincoln to national prominence.

The election of 1868 cemented power and support for Radical Reconstruction

In the first presidential election after the Civil War, Republican Ulysses S. Grant defeated Democrat Horatio Seymour. President Andrew Johnson, deeply unpopular with both parties, was denied renomination. Grant's victory reflected Northern support for Reconstruction.

Lincoln's original reconstruction vision prioritized reconciliation

Proposed in 1863, Lincoln's Ten Percent Plan offered lenient readmission for Southern states once 10% of voters pledged loyalty and ended slavery. It was adopted in a few Union-occupied areas but was only partially implemented before his assassination in 1865.

Abraham Lincoln's election in 1860 triggered a cascade of Southern secessions and the formation of the Confederacy, culminating in the Confederate attack on Fort Sumter in Charleston, South Carolina.

Future President Abraham Lincoln challenged Polk’s justification for war with Mexico

As a freshman congressman, Abraham Lincoln introduced the “Spot Resolutions,” demanding President Polk prove that Mexico had attacked on US soil. This constituted Lincoln’s first major political stand and highlighted growing dissent over the war.

Congress's Wade-Davis Bill demanded harsher terms for Southern reentry

Passed in 1864, the Wade-Davis Bill required 50% of white male voters to swear loyalty and guarantee emancipation before readmission. Lincoln pocket-vetoed it, rejecting Congress's stricter approach.

The Kansas-Nebraska Act sparked violence that foreshadowed the Civil War

The 1854 Kansas-Nebraska Act let settlers vote on whether to allow slavery, repealing the Missouri Compromise. Competing proslavery and antislavery groups poured into Kansas, sparking years of bloody conflict known as "Bleeding Kansas."

In the midst of the Civil War, Lincoln rapidly expanded presidential power

Abraham Lincoln suspended habeas corpus, expanded the army without congressional approval, and issued the Emancipation Proclamation—despite likely lacking authority to unilaterally alter national slave law. His actions set precedents for expanded presidential power in wartime.

View animated battle maps from every major skirmish of the American Civil War.

The disputed 1876 Presidential election accelerated the end of Reconstruction

The 1876 election between Rutherford B. Hayes and Samuel J. Tilden ended in a deadlock over contested Southern votes. To resolve the crisis, Democrats accepted Hayes's presidency in exchange for the withdrawal of federal troops—formally ending Reconstruction.

US westward expansion—and the status of slavery in the new territories—was a major cause of the American Civil War

The addition of new western lands forced the nation to confront whether slavery would spread beyond the South. Each debate over the admission of a new state sharpened the divide between free and slaveholding regions.

Hear how the world reacted to the American Civil War

European nations closely watched the Civil War for its economic and political consequences. Some European nations quietly engaged diplomatically with the Confederacy but withheld recognition. When the Union made slavery's abolition a central cause, European public opinion turned sharply against the South.

Read an annotated 1866 essay by abolitionist Frederick Douglass, where he laid out his vision for reshaping America after the Civil War.

Voting rights expanded from 6% of Americans in 1789 to nearly all adult citizens today.

Lincoln's Gettysburg Address became one of the most famous speeches in American history

Delivered by Lincoln on Nov. 19, 1863, at the dedication of a national cemetery, the 272-word Gettysburg Address reframed the war as a struggle for equality. The speech would be cited as a moral touchstone for later movements such as women's suffrage and civil rights.

Mexico admired Lincoln for opposing the war and supporting Mexican sovereignty

As a congressman, Abraham Lincoln condemned the Mexican-American War as unjust. Years later, as president, he backed Mexico’s fight against French occupation. His principled stance earned enduring respect and monuments across Mexico.

The Compromise of 1850 tried to settle disputes over land gained from Mexico

Territory acquired in the Mexican-American War reignited fierce debates over slavery’s expansion. The Compromise of 1850 aimed to ease tensions by admitting California as a free state and letting other territories decide the issue—but the compromise ultimately failed and helped pave the way to the Civil War.

The Civil War introduced many technological advances to both society and warfare.

Lincoln was assassinated by a well-known actor, who originally planned to kidnap him

On April 14, 1865, actor John Wilkes Booth shot President Abraham Lincoln at Ford's Theatre in Washington, DC. Booth had initially conspired to kidnap Lincoln but turned to assassination after the Confederacy's defeat.

'Presidential Reconstruction' attempted rapid reunification with minimal federal oversight

Led by Andrew Johnson after Lincoln's death, Presidential Reconstruction (1865-67) quickly restored Southern governments through mass pardons and lenient terms, allowing ex-Confederates to regain power and pass Black Codes that restricted freedpeople's rights.

The Civil War turned the Continental Divide into an American symbol of identity

Historians argue that the boundary only became a celebrated American symbol in the 1860s, when Civil War-era leaders promoted a west-east geographic divide to replace the devastating north-south political divide, and that the term's use spiked after the transcontinental railroad crossed it in 1868.

Congress descended into fistfights, duels, and violence before the Civil War

In the decades before the Civil War, members of the United States Congress carried weapons, assaulted colleagues, and, in one case, a congressman killed another in a duel. The violence was driven largely by sectional conflict over slavery and foreshadowed the nation's descent into war.

Southern states enacted voting restrictions aimed at circumventing Reconstruction

After 1877, former Confederate states passed poll taxes, literacy tests, property requirements, and grandfather clauses to disenfranchise Black voters—restrictions that remained in place for nearly a century until the Voting Rights Act of 1965.

Hamilton's endorsement helped win Jefferson the presidency

In the 1800 presidential election, neither candidate won a majority in the Electoral College, sending the decision to the House of Representatives. After 36 failed votes, Alexander Hamilton lobbied for his ideological rival, Thomas Jefferson, over Aaron Burr, helping break the deadlock.

Ulysses S. Grant's leadership proved decisive in victory—and shaped postwar America

Elevated to general-in-chief in 1864, Ulysses S. Grant unified the Union strategy and forced a Confederate surrender at Appomattox. Elected president in 1868, he worked to enforce Reconstruction laws and protect the civil rights of freed African Americans.

Congress created a special electoral commission to resolve the 1876 election

After multiple states sent competing electoral slates in 1876, Congress formed the Electoral Commission of 1877 to arbitrate the dispute, which ultimately awarded the presidency to Rutherford B. Hayes and prompted later reforms to the electoral count process.

The Electoral College was shaped in part to balance North–South power

This article examines how the Electoral College emerged from political compromise, including efforts to placate slave-owning Southern states and concerns that Northern states would dominate a direct national presidential vote.

Listen to a widely lauded historical fiction podcast about the manhunt and power struggle that gripped the US after President Abraham Lincoln's assassination.

Abraham Lincoln's assassination helped create the multibillion-dollar funeral business

After the president was killed in April 1865, he became one of the first well-publicized embalming examples in the US. The burgeoning science enabled his body to go on a multistate tour. Prices soon climbed for the process and fueled more wakes, perhaps helping to lay the foundation for the pricy funeral industry.

Radical Reconstruction began in response to the lenient policies of Andrew Johnson

In 1867, Congress passed the Reconstruction Acts—overriding Johnson's vetoes—placing the South under military rule and requiring new state constitutions, Black male suffrage, and ratification of the 14th Amendment before readmission.

Was the Civil War really about states' rights?

The Civil War was fought over slavery, and Confederate leaders and supporters admitted as much in the build-up to the war and after. But later on, after the South's defeat, the lie of the Lost Cause was pushed—and it persists to this day. This four-minute video details the story of the Lost Cause, "state's rights", Confederate monuments, and the machinations behind them.

Truth met President Lincoln at the White House in 1864

In October 1864, Truth traveled to Washington and met President Lincoln a week before his reelection, though she could secure the appointment only through a white abolitionist friend. Lincoln signed her autograph book, and Truth later said she had never been treated with more "kindness and cordiality" by anyone.

The Dred Scott decision denied citizenship to people of African descent

In 1857, the Supreme Court ruled in Dred Scott v. Sandford that Black Americans could not be US citizens. The decision heightened an already brewing conflict and became a key factor in pushing the nation toward civil war.

According to Confederate leaders, the defense of slavery was the primary reason for secession.

Five US presidents won the election despite losing the popular vote

Because presidents are elected through the Electoral College rather than a national vote, candidates can win while receiving fewer votes nationwide. John Quincy Adams, Rutherford B. Hayes, Benjamin Harrison, George W. Bush, and Donald Trump (2016) each won the presidency while losing the nationwide popular vote.

The South was placed under federal military rule during Reconstruction

Beginning in 1867, the Reconstruction Acts divided 10 former Confederate states into five military districts, each governed by a Union general. Federal troops supervised elections, enforced civil rights, and maintained order under direct congressional authority.

11 states formed the Confederacy, with 2 others claiming allegiance

Between December 1860 and June 1861, 11 Southern states officially seceded to form the Confederacy. Pro-Confederate factions in Missouri and Kentucky also declared secession, but both states remained largely under Union control throughout the war.

Where was the Civil War fought?

The Civil War is commonly described as a war between northern and southern US states, but where was the war actually fought? Watch this interactive map and timeline to see who fought who and when. Click on specific battles to learn more about each fight.

Ulysses S. Grant unsuccessfully attempted to run for a third term in 1880

After serving two terms from 1869 to 1877, Grant sought the Republican nomination again in 1880. Though he led the early convention ballots, party opposition blocked him, and James A. Garfield ultimately emerged as the nominee.

A detective foiled an assassination plot against Lincoln before his inauguration

In February 1861, detective Allan Pinkerton uncovered a plot to kill Abraham Lincoln en route to his inauguration. Lincoln secretly altered his travel plans and sneaked into Washington DC to take the oath of office. Pinkerton later founded the well-known Pinkerton's National Detective Agency.

The Civil War permanently strengthened federal power

The Civil War expanded federal power through emancipation, national military mobilization, and postwar civil rights laws, permanently strengthening the national government and shifting the balance of authority away from the states.

Abraham Lincoln had to sneak into Washington, DC, in disguise for his 1861 inauguration after a detective uncovered a plot to assassinate him in Baltimore.

President Andrew Johnson was mainly impeached for obstructing Reconstruction

In 1868, the House impeached Andrew Johnson for violating the Tenure of Office Act and obstructing congressional Reconstruction policies. Johnson was the first president ever to be impeached, surviving conviction and removal in the Senate by a single vote.

The Missouri Compromise temporarily eased tensions over slavery's expansion

Passed in 1820, the Missouri Compromise admitted Missouri as a slave state and Maine as a free state—maintaining the fragile balance between proslavery and antislavery states in Congress. It also banned slavery north of latitude 36°30′.

The Civil War was the deadliest conflict in American history

Between 1861 and 1865, an estimated 620,000 to 750,000 soldiers died from battle and disease—more than in all other US wars combined.

Was the Gettysburg Address written on the back of an envelope?

Abraham Lincoln, the 16th president of the United States, wrote his famed Gettysburg Address on a train car. Actually, he had a version of it ready a few days before. Well, really, he came up with it on the spot. Rumors about the speech's creation abound. This 1909 article walks readers through evidence Lincoln's speech was carefully planned and written in Washington, DC (in pencil).

Bills passed during the Civil War shaped postwar America

Despite the war with the South, Congress passed transformative laws like the Homestead Act and the Morrill Land-Grant College Act, which encouraged westward settlement and expanded higher education.

Whitman led a Lincoln lecture late in life

Whitman toured several cities with “The Death of Lincoln,” a lecture series about the slain president that sought to establish him as a crucial figured in American history. The talks attracted famous figures, including Mark Twain and General William Tecumseh Sherman.

The Reconstruction Amendments aimed to rebuild the nation and secure freedom after slavery

Ratified between 1865 and 1870 after the conclusion of the war, the 13th, 14th, and 15th Amendments abolished slavery, guaranteed citizenship and equal protection, and extended voting rights to Black men—transforming the Constitution's definition of liberty and equality.