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1961	Bay of Pigs invasion. Berlin Wall erected. Kennedy increases military aid to South Vietnam. Peace Corps created.
1962	Cuban missile crisis.
1963	President Kennedy assassinated; Lyndon B. Johnson becomes president.
1964	Gulf of Tonkin Resolution.
1965	Operation Rolling Thunder begins. First combat troops to Vietnam. U.S. troops invade Dominican Republic.
1967	Arab-Israeli Six-Day War.
1968	Demonstrations against Vietnam War increase. Tet Offensive. Johnson decides not to seek second term. Violence near Democratic convention in Chicago. Richard M. Nixon elected president.
1969	American astronauts land on moon.
1970	Nixon orders invasion of Cambodia. Students killed at Kent State and Jackson State.
1971	Pentagon Papers published.
1972	Nixon becomes first U.S. president to visit China. Nixon signs arms limitation treaties with Soviets.
1973	Paris Peace Accords. CIA-backed military coup in Chile. Arab oil embargo following Yom Kippur War.
1975	North Vietnam takes over South Vietnam, ending the war. Helsinki accords.