George Washington was the first President of the United States, serving from 1789 to 1797.

Christopher Columbus sailed on the Santa Maria when he discovered America in 1492.

Maximilien Robespierre was the leader of the French Revolution, serving as the President of the National Convention from 1793 to 1794.

The Treaty of Paris was signed in 1783, ending the American Revolutionary War and recognizing the independence of the United States.

Barack Obama was the first African American President of the United States, serving from 2009 to 2017.

The space shuttle Challenger exploded shortly after takeoff in 1986, killing all seven crew members.

Mikhail Gorbachev was the leader of the Soviet Union during the Cold War, serving from 1985 to 1991.

V-E Day, or Victory in Europe Day, marked the end of World War II in Europe on May 8, 1945.

Amelia Earhart was the first woman to fly solo across the Atlantic Ocean in 1932.

The Peaceful Revolution was a series of nonviolent protests that led to the fall of the Berlin Wall in 1989.

Neil Armstrong was the first person to walk on the moon in 1969.

The 9/11 attacks were a series of four coordinated terrorist attacks by the Islamic terrorist group Al-Qaeda against the United States on the morning of September 11, 2001.

Mahatma Gandhi was the leader of the Indian National Congress during the Indian independence movement.

The Fall of the Berlin Wall in 1989 led to the reunification of Germany.

Mao Zedong was the leader of the Chinese Communist Party during the Cultural Revolution.