The joint resolution of the U.S. Congress passed on August 7, 1964 in direct response to a minor naval engagement known as the Gulf of Tonkin incident. It gave President Johnson authorization for the use of military force in Southeast Asia.
A trail wound through Cambodia and Laos by passing the border between North Vietnam and South Vietnam, that was used by North Vietnam to send arms and supplies south by way of a network of jungle paths.
Hawks were someone who believed the United States should continue its military effort in Vietnam. Doves were a person in favor of the United States withdrawing from the Vietnam War.
President Nixon appeared on national television to announce the invasion of Cambodia by the United States and needed to draft 150,000 more soldiers, which aggravated people on campuses causing massive protests such as the Kent State shootings.