What is the importance of the gulf of Tonkin, Hanoi, Saigon, and Ho Chi Minh trail in the Vietnam war?

The Ho Chi Minh trail provided support, in the form of manpower and materiel, to the Vietcong and the People's Army of Vietnam. The Gulf of Tonkin is important because, President Lyndon B. Johnson claimed that North Vietnamese forces had attacked American destroyers in the Gulf of Tonkin. Today it is known as the Gulf of Tonkin Incident, this event ultimately lead to war between North Vietnam and the United States. Hanoi was the capital of North Vietnam, it became the capital of Vietnam when North and South Vietnam were reunited in July of 1976. The Fall of Saigon marked the end of the Vietnam War.