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The assassination of the heir to the Austria-Hungary throne led to the declaration of World War I. -
The Zimmerman telegram being released pushed America into joining World War 1. -
The Great Depression was a time of economic downturn lasting ten years. -
On December 12, 1941 Japan bombs Pearl Harbor leading America to join World War II. -
Japan surrendered after the bombing of Hiroshima and Nagasaki. -
The holocaust was the systematic genocide of European Jews during World War II. -
On August 21, 1959 President Eisenhower signed a proclamation admitting Hawaii as the 50th state. -
America's Apollo mission wins them the space race. -
Dr. King's "I have a Dream Speech" led to the creation of the Civil Rights Act of 1964 and the Voting Rights Act of 1965. -
The fall of the Berlin Wall led to the fall of the Union of Soviet Socialist Republic.