The 20 Most Memorable Things U.S. Presidents Ever Did

The Big Ones We Remember

Leadership shows in what gets done, not just what's said. Some presidents made outstanding moves, and their choices shaped what came next. While not every move was loud or dramatic, the lasting ones are hard to ignore, so let's look at the 20 most memorable things they actually did.

1. Abraham Lincoln Led Through The Civil War

Lincoln stepped into office in 1861 as the nation fractured. Southern states were leaving, conflict was unavoidable, but he refused to accept disunion and committed to preserving the Union. After four exhausting years, the Union stood—fractured but intact.

2. George Washington Declared American Independence From British Rule

Although Jefferson drafted the Declaration, Washington made it stick. In 1775, he took command of the Continental Army, leading an under-equipped force through years of war. His leadership kept the revolution alive. When it ended, he declined absolute power.

3. Thomas Jefferson Authorized the Louisiana Purchase

In 1803, Jefferson negotiated the Louisiana Purchase with France. This doubled the size of the United States and opened vast new lands for growth and exploration. Though it tested his strict views on government power, he made the call anyway.

4. Theodore Roosevelt Broke Up Corporate Monopolies

At the turn of the century, monopolies ran unchecked. Roosevelt saw the threat to fair markets and took action. Using the Sherman Antitrust Act, he targeted giants like Northern Securities. His efforts curbed corporate power and earned him the nickname "trust buster."

5. Harry Truman's Nuclear Attacks

When Roosevelt passed in 1945, Truman inherited a brutal war. Faced with a costly invasion of Japan, he authorized attacks on Hiroshima and Nagasaki. The devastation was massive, but Japan surrendered soon after, and the decision began the nuclear era overnight.

6. Lyndon B. Johnson Signed the Civil Rights Act

By 1964, civil rights protests had pushed segregation to the national spotlight. Johnson took a stand and signed the Civil Rights Act, outlawing discrimination in public spaces and employment. He rallied bipartisan support to pass it.

7. Theodore Roosevelt Created the National Parks System

Roosevelt went out of his way to protect nature with the Antiquities Act. He signed it in 1906, allowing him to preserve landmarks, forests, and wildlife. He also designated national parks and monuments across the country. His vision shaped the system that still lets you explore America's wildest places today.

8. John F. Kennedy Managed the Cuban Missile Crisis Peacefully

In 1962, U.S. spy planes found Soviet missiles in Cuba. Tensions soared, and nuclear war seemed near. Kennedy responded with a blockade and secret negotiations, and after thirteen tense days, both sides backed down.

9. Abraham Lincoln Ended Slavery

Winning the war wasn't enough for Lincoln—he wanted slavery gone for good. He pushed hard for the 13th Amendment, knowing the Emancipation Proclamation wasn't permanent. In January 1865, Congress passed it. Just months later, the amendment was ratified, and slavery was officially abolished.

10. Franklin D. Roosevelt Launched the New Deal Programs

When the Great Depression crushed the economy, Roosevelt acted fast. In 1933, he introduced the New Deal—public works, banking reform, and job creation programs designed to help struggling Americans. These actions set long-term economic foundations.

11. George Washington Delivered the Anti-Party Farewell Address

After two terms, Washington chose to walk away from power. Before leaving, he gave a farewell address that warned against divisive political parties and entangling foreign alliances; it was advice rooted in experience and meant to help future leaders avoid chaos and conflict.

12. Andrew Johnson Secured Alaska From Russia

In 1867, Secretary of State William Seward struck a deal under Johnson's presidency to buy Alaska for $7.2 million. Critics called it "Seward's Folly," thinking the land was useless, but they were wrong. The territory became a valuable part of America.

13. Dwight D. Eisenhower Built the Interstate Highway System

Eisenhower saw what good roads could do while serving in WWII. As president, he prioritized highways and even signed the Federal-Aid Highway Act. 41,000 miles of interstate roads followed, creating a network that transformed travel and the economy.

14. Franklin D. Roosevelt Delivered the Four Freedoms Speech

In January 1941, with war looming, Roosevelt outlined what every person should enjoy: freedom of speech, freedom of worship, freedom from want, and freedom from fear. The Four Freedoms speech helped define the U.S. role in defending democracy and human rights.

15. James Monroe Issued the Monroe Doctrine

Monroe made a bold statement in 1823: European powers had no business interfering in the Americas. His message, known as the Monroe Doctrine, shaped foreign policy for decades and told the world the U.S. would defend its hemisphere.

16. Richard Nixon Championed Environmental Protection

Pollution was rising fast in the 1970s, and public concern grew louder. Nixon responded by creating the Environmental Protection Agency in 1970. This was the first federal body to regulate air, water, and industrial waste—a move that gave us lasting tools to protect natural resources.

17. Richard Nixon Resigned Amid the Watergate Scandal

After a break-in at the Democratic headquarters, Nixon's administration faced growing scrutiny. The investigation uncovered abuse of power, leading to televised hearings and released tapes. In August 1974, Nixon resigned. It was the first—and only—presidential resignation in U.S. history.

18. Jimmy Carter Pioneered the Camp David Accords

Middle East peace seemed impossible until Carter brought Egypt's Anwar Sadat and Israel's Menachem Begin to Camp David in 1978. After tense negotiations, they signed a historic peace agreement, and Carter's behind-the-scenes diplomacy made it one of the most enduring U.S.-brokered accords.

19. Ronald Reagan Ended the Cold War

Reagan entered office during peak U.S.-Soviet tensions, but by his second term, he shifted gears. He built trust with Soviet leader Mikhail Gorbachev through face-to-face summits, and in 1987, they signed a major arms reduction treaty.

20. John F. Kennedy Set the Apollo Moon Landing Goal

In 1961, Kennedy told Congress the U.S. would land a man on the moon before the decade's end. That single challenge launched a decade of innovation and fierce space competition. In 1969, Apollo 11 touched down, but Kennedy didn't live to see it.