The attack on Fort Sumter was the Civil War's first battle

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 final shots of the Civil War were fired in the Arctic over 2 months after the South's surrender

In June 1865—two months after Lee's surrender—the Confederate raider CSS Shenandoah unknowingly attacked Union whaling ships in the Arctic. When the crew learned the war was over, they sailed 9,000 miles to surrender in Liverpool, England.

One of the earliest Memorial Day ceremonies was held by newly freed Black Americans in South Carolina

On May 1, 1865, roughly 10,000 people, mostly freed slaves, paraded around a Charleston racetrack where Union prisoners had been buried, predating the first national commemoration at Arlington National Cemetery by three years.

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.

The Union victory at Gettysburg marked a major turning point in the war

Fought July 1-3, 1863, the Battle of Gettysburg ended the Confederate invasion of the North. While the Union lost nearly 23,000 troops, its victory in one of America's most famous battles shifted the war's momentum decisively toward the North.

See rare Civil War photographs preserved by the National Archives

The Civil War was the first major American conflict documented by a camera, with its images distributed widely to the public. The National Archives' digital collection offers thousands of original Civil War images: portraits, battlefields, hospitals, and everyday life.

See the army generals who helped define the Civil War

Hear profiles of the Union and Confederate commanders whose choices defined the war's outcome—from Grant and Lee to Sherman, Jackson, and others. See how their actions, tactics, and skills shaped the Civil War.

The Prize Cases established that the president can respond to an attack without waiting for Congress to act

When Lincoln blockaded Confederate ports at the start of the Civil War without congressional authorization, the Supreme Court upheld his actions, ruling that a president does not initiate war by responding to an attack and need not wait for Congress when the nation is already under threat.

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.

The Confederate flag that most people recognize was not the national flag

The familiar Confederate flag was actually a battlefield banner; the Confederacy's true national flag, the "Stars and Bars," featured a blue canton with white stars and red-white-red stripes resembling the US flag.

The nullification crisis tested whether states could defy federal law

In the 1830s, South Carolina declared federal tariffs void within its borders. President Andrew Jackson threatened military force, Congress passed a compromise tariff, and the episode ended with federal authority prevailing over state nullification.

The ‘Star-Spangled Banner’ was written in 1814, during the War of 1812

The song is based on “Defence of Fort M’Henry” a poem written by Francis Scott Key, a lawyer negotiating for the release of American soldiers when Fort McHenry, in Baltimore, was attacked by the British.

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.

Abraham Lincoln was almost assassinated weeks before his inauguration as he traveled from Illinois to DC through Baltimore in 1861; it took two independent claims for Lincoln to be convinced the threat was real

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.

Fracking originated in the American Civil War

After witnessing how artillery created fissures in narrow water channels, a Civil War veteran wondered if the process could be replicated in underground wells to extract oil. He patented an "exploding torpedo" for this purpose, which became the foundation for future fracking techniques.

The White House was burned by British forces during the War of 1812

On August 24, 1814, British troops invaded Washington, DC, and set fire to the President's House, destroying its interior and roof. However, the exterior sandstone walls survived. After the war, reconstruction began under the original architect.

Twain served in a Confederate militia for two weeks

In 1861, a 25-year-old Twain joined the Marion Rangers, a pro-Confederate militia. The group disbanded after two weeks upon hearing that Ulysses S. Grant, General of the Union Army, was headed their way. Twain moved to Nevada, where he eventually took a job at a newspaper.

North Carolina's original copy of the Bill of Rights was stolen during the Civil War and recovered 138 years later

A Union soldier looted the document from the state archives in 1865 and sold it for $5. It remained in private hands for more than a century before an undercover FBI agent posing as a buyer seized it in 2003 at a Philadelphia office building.

The State of the Union address was first delivered in New York City

The first address took place in New York City in 1790, when President George Washington addressed Congress at Federal Hall—the nation's capital under the Articles of Confederation and the seat of the federal government during the Constitution's first year.

The 1915 sinking of the Lusitania precipitated World War I

In 1915, the British RMS Lusitania sank after being torpedoed by a German submarine. The Germans claimed the ocean liner was transporting munitions. Almost 1,200 civilians were killed in the disaster, which became a symbol of German aggression in the lead-up to World War I.

Hear the story of the largest single escape attempt by enslaved people in American history

On April 15, 1848, 77 enslaved individuals in Washington, DC, boarded a ship named the Pearl in the largest single escape attempt in US history. Their capture led to riots and intensified the conflict over fugitive slave laws.

Watch how the Stamp Act in 1765 sparked the American Revolution

The reaction to the first direct tax on colonists prompted the second-ever colonial congress and a broad boycott of British goods. It also gave birth to the Declaration of Rights and Grievances, the congress's document articulating the "no taxation without representation" stance. The act's passage was a major stepping stone to revolution.

Explore an interactive map of battles from the American Revolution, along with detailed summaries of each engagement

Many myths continue to circulate about the first Thanksgiving

The Thanksgiving myth didn’t really start in 1621, argues historian David Silverman in this interview with Smithsonian. Rather, it took hold over 200 years later. During the Civil War, Thanksgiving was declared a national holiday by Abraham Lincoln as a way to promote national unity. The tidy story of friendship between Native Americans and colonists was used to quell racial tensions of the late 19th century.

A Navy messman with no gunnery training defended his ship at Pearl Harbor

Doris “Dorie” Miller, a Black Navy messman assigned to steward duties rather than a combat role, seized a .50-caliber machine gun aboard USS West Virginia during the attack. Despite no formal weapons training, he fired until out of ammo—becoming the first African American to earn the Navy Cross.

A Marine’s-eye view of the Battle of Iwo Jima

February 19, 2023, marked the 78th anniversary of the beginning of the battle of Iwo Jima. A decisive battle in World War II's Pacific Theater, most American's associated the iconic "raising of the flag" photo with the fight. This five-minute video provides a glimpse of what the six-week fight was like from the vantage of an individual US Marine.

The rivalry between Alexander Hamilton and Thomas Jefferson centered on federalism—the question of how much power the federal government should hold relative to the states.

The original copy of the Declaration of Independence is not a pristine document, and even features a smudged anonymous handprint in the bottom left corner.

The US first hosted the World Cup in 1994, a tournament that lives in soccer infamy for its poor planning and the murder of Colombian player Andres Escobar, who'd accidentally scored on his own net.

The 19th-century painters of the Hudson River School were among the first American romantics, with portraits that displayed the natural beauty of the young country.

Before writing 'Walden,' transcendentalist Henry David Thoreau nearly burned down his hometown with a campfire that grew out of control.

Fireworks make a loud booming sound after exploding due to air expanding faster than the speed of sound.

The concept of phantom limbs, the perception that amputated limbs are still present, dates back to a French military surgeon in the 16th century.

The American cockroach is actually from Africa, an apparent hitchhiker aboard ships carrying enslaved people, with evidence suggesting the bug may have arrived in the New World as early as the 1600s.

In 1984, Operation Smash Hit intentionally crashed a 239-ton train into a nuclear waste canister at 100 miles per hour to prove the canister's safety, which remained completely intact and lost just 0.29 of its 100 pounds of pressure.

A 2019 Facebook event called on attendees to "Storm Area 51, They Can't Stop All of Us," resulting in countless memes, the creation of a music festival, and eventually the arrests of those who did try to approach the area.

In 2025, four executives from large tech companies were given positions in the US Army Reserves—including Palantir Chief Technology Officer Shyam Sankar, which reinforced Palantir's ties with the US military and its role as a leading defense partner.

In 2018, 26-year-old missionary John Allen Chau was killed by tribesmen after attempting to reach and evangelize on India's isolated North Sentinel Island

While the first exchange-traded fund (a 'basket' of different assets that can be bought and sold on a stock exchange) in the US only launched in 1993, the global ETF market has grown to more than $10T in the short time since.

The animatronic shark from Steven Spielberg's 'Jaws,' the first modern blockbuster, was a complex underwater apparatus called 'Bruce.'

Ebola infects and disables immune cells, triggering a cascade of events that leads to small blood clots throughout the body, weakening blood vessels and interrupting blood flow to key organs.

Watch a 1934 short film starring jazz legend Cab Calloway, a major figure in the Harlem Renaissance's music scene

The Russia-Ukraine conflict is the largest ground war in Europe since World War II in terms of casualties, forces mobilized, and displacement of civilians.

Sunflowers have long been a symbol of nuclear disarmament because they can extract large amounts of radioactive cesium from soil.

View the ten deadliest tornadoes in US history.

The Beatles' US label rejected the band's first two singles, 'Please Please Me' and 'From Me to You,' with one executive calling the band 'dead in the water.'

The first line of 'immortal' human cells, which can divide indefinitely and are used in scientific research, was nonconsensually taken from a Black woman.

Between 10 million and 50 million people in the US develop rashes from poison ivy, poison sumac, and poison oak each year.

Sears sold DIY house kits starting at $600 in its famous catalog from 1908 through the 1940s, resulting in roughly 10,000 'Sears and Roebuck houses' being built.