The document summarizes key events in the Vietnam War from US intervention in the 1950s to the end of the war in the 1970s. It discusses the US sending aid to South Vietnam after the Geneva Accords divided Vietnam, as well as the Gulf of Tonkin incident that led to the Gulf of Tonkin Resolution greatly expanding presidential war powers. It also covers the growth of the anti-war movement in response to graphic TV coverage of the war and events like the Tet Offensive and Kent State shootings. Finally, it outlines the US withdrawal from Vietnam and subsequent policies like the War Powers Act limiting presidential authority to wage war without congressional approval.