U.S. History Timeline

  • Truman becomes president

  • Atomic bombs dropped on Hiroshima and Nagasaki

  • Cold War begins between U.S. and Soviet Union

  • Truman Doctrine

  • NATO Treaty

  • Korean Conflict

  • Presidency of Truman ends

  • NASA formed

  • Cuban revolution

  • Greensboro Sit-in

  • Vietnam war begins

  • Cuban missile crisis

  • President Kennedy assassinated

  • Johnson elected president

  • Civil Rights Act

  • Presidential candidate Robert Kennedy is assassinated

  • Nixon elected president

  • Johnson's presidency ends

  • Neil Armstrong walks on the moon

  • Watergate Scandal

  • Nixon resigns