Which decade did humans first land on the Moon?

Which decade was the Berlin Wall torn down?

Which decade did World War II end?

Which decade did Martin Luther King Jr. give his "I Have a Dream" speech?

Which decade did the Soviet Union dissolve?

Which decade did the Great Depression begin?

Which decade did the September 11 attacks occur?

Which decade was Nelson Mandela released from prison and elected president of South Africa?

Which decade was the Korean War primarily fought in?

Which decade did American women gain the right to vote?