Christopher Columbus lands at Hispaniola and claims the island for the Spanish Crown, declaring its people without government.

The first enslaved Africans arrive in British Virginia, seized from a Portuguese ship and sold to colonists.

Armed colonial militiamen clash with British troops at Lexington and Concord, firing the first shots of the Revolution.

The Continental Congress adopts the Declaration of Independence, formally proclaiming the colonies' separation from Britain.

Delegates meeting secretly in Philadelphia draft and sign the Constitution, creating a new framework for federal government.

George Washington is inaugurated as the nation's first president at Federal Hall in New York City.

Andrew Jackson defeats John Quincy Adams in a landslide, ushering in a new era of popular democracy.

Confederate forces fire on the Union garrison at Fort Sumter in South Carolina, launching the Civil War.

Lincoln issues the Emancipation Proclamation, declaring enslaved people in Confederate states free on New Year's Day.

John Wilkes Booth shoots President Lincoln at Ford's Theatre; Lincoln dies the following morning.

The Supreme Court rules in Plessy v. Ferguson that racial segregation is constitutional under 'separate but equal.'

Franklin D. Roosevelt defeats Herbert Hoover and promises Americans 'a new deal' to rescue the collapsing economy.

The Japanese Navy attacks Pearl Harbor, destroying much of the US Pacific Fleet and killing thousands of Americans.

The United States drops atomic bombs on Hiroshima and Nagasaki, forcing Japan's surrender and ending World War II.

Donald Trump defeats Hillary Clinton in the presidential election, completing an upset that shocks the nation and world.

This pool follows the most consequential events in American history, from Columbus's arrival in the Americas through the nation's founding, expansion, and reckoning with slavery. It traces how the Declaration of Independence and the Constitution established the republic's ideals, while leaders like Washington and Jackson shaped its early character. The Civil War marks the central catastrophe of American history, fought over slavery, and Lincoln's assassination leaves Reconstruction to those far less committed to equality. The rise of legal segregation through Plessy v. Ferguson and the eventual New Deal recovery show how the nation lurched between promise and failure. World War II demonstrates America's emergence as a global superpower, culminating in the atomic bomb's devastating and world-altering use. The pool ends with Trump's 2016 election, a moment Lepore presents as both the product of decades of division and a profound test of whether the American experiment can endure.

The landmark events that built and tested American democracy from Columbus to Trump.

Hernán Cortés leads Spanish forces to destroy Tenochtitlán, the great Aztec capital, and raze its libraries.

The Virginia House of Burgesses convenes as the first representative self-governing legislative body in the English colonies.

Nathaniel Bacon leads 500 armed colonists to burn Jamestown to the ground in revolt against the colonial governor.

Over 100 enslaved Black men launch the Stono Rebellion in South Carolina, marching toward promised freedom in Spanish Florida.

Colonists disguised as Mohawk warriors board British ships in Boston Harbor and dump chests of tea overboard.

The Bill of Rights is ratified as ten amendments to the Constitution, listing what Congress cannot do.

Nat Turner leads a slave rebellion in Virginia that kills more than 50 white Southerners before being suppressed.

Andrew Jackson defies a Supreme Court ruling and forces the Cherokee Nation to relocate west of the Mississippi.

John Brown and 21 men seize the federal arsenal at Harper's Ferry, hoping to ignite a nationwide slave revolt.

The Supreme Court rules unanimously in Brown v. Board of Education that racially segregated schools are unconstitutional.

NAACP activist Rosa Parks refuses to give up her bus seat in Montgomery, triggering a citywide boycott.

President Lyndon Johnson signs the Civil Rights Act, outlawing racial discrimination in public accommodations across the nation.

Richard Nixon resigns the presidency to avoid certain impeachment over the Watergate burglary and its cover-up.

Hijackers crash planes into the World Trade Center and the Pentagon in coordinated attacks, killing thousands of Americans.

Barack Obama defeats John McCain to become the first Black president in United States history.

This pool covers major events that shaped American institutions and drove the nation's ongoing struggle for equality, beginning with Spanish conquest and the first colonial experiments in self-governance. Slave rebellions from the Stono Rebellion to Nat Turner reveal the persistent resistance to oppression that the nation's official history often downplays. The forced removal of the Cherokee and the drama at Harper's Ferry show the deepening crisis over slavery that made civil war inevitable. The twentieth century brings the civil rights movement's landmark moments, including Brown v. Board of Education, Rosa Parks's refusal, and the signing of the Civil Rights Act. Nixon's resignation reveals the fragility of democratic norms, while the September 11 attacks reshape the nation's foreign policy and civil liberties for decades. The pool closes with Obama's election, a milestone that seemed to signal profound progress even as deep divisions were already forming beneath the surface.

Significant acts of resistance, institution-building, and civil rights progress across four centuries.

The first printing press in British North America begins operating in Boston, laying groundwork for a free colonial press.

A New York jury acquits printer John Peter Zenger, establishing that truthful criticism of corrupt officials is not libel.

Thomas Paine publishes Common Sense, arguing in plain language that Americans must break free from monarchical rule.

The Constitutional Convention writes the Three-Fifths Compromise into the Constitution, counting each enslaved person as three-fifths of a free person.

Gabriel Prosser organizes a large slave rebellion in Virginia under the motto 'Death or Liberty,' but it is crushed.

Enslaved Haitians defeat French colonial forces and establish the Western Hemisphere's first Black republic.

Congress passes the Missouri Compromise, drawing a geographic line separating future slave states from free states.

The Supreme Court rules in Dred Scott v. Sandford that Black Americans have no rights the Constitution protects.

Abraham Lincoln and Stephen Douglas debate slavery and the Constitution before thousands of Illinois voters, revealing the nation's divide.

The Senate rejects Woodrow Wilson's Treaty of Versailles and his proposed League of Nations.

CBS reporter Edward R. Murrow broadcasts Joseph McCarthy's cruelty on national television, fatally undermining the senator's campaign of fear.

Federal troops escort the Little Rock Nine through a hostile crowd into a desegregated Arkansas high school.

Ronald Reagan wins the presidency in a landslide, declaring in his inaugural address that government itself is the problem.

The Supreme Court halts Florida's presidential vote recount in a narrow decision, awarding the presidency to George W. Bush.

Congress passes the Affordable Care Act over fierce Republican opposition, marking the nation's first major health care reform.

This pool traces pivotal moments of discovery and decision that fundamentally altered the direction of American history, from the arrival of the first printing press to the contested presidential recount. The Zenger trial's defense of truthful criticism and Paine's plain-spoken argument for independence show how ideas and information shaped political possibilities before the Revolution. The Three-Fifths Compromise embedded in the Constitution reveals how the Founders concealed the institution of slavery within the republic's founding documents. Gabriel Prosser's rebellion and the Haitian Revolution demonstrate that resistance to slavery was always present, even as the Missouri Compromise tried to contain the conflict geographically. The Dred Scott decision and the Lincoln-Douglas debates forced an unavoidable public confrontation with the nation's central contradiction, hastening the war that followed. The pool's later events—Murrow exposing McCarthy, Reagan declaring government itself the problem, the disputed recount that handed Bush the presidency, and the passage of the Affordable Care Act—show how turning points continued to test whether America's founding ideals would hold.

Key decisions and revelations that redirected the course of the American experiment.