| A | B |
|---|
| Ho Chi Minh | North Vietnamese communist leader |
| Ngo Dinh Diem | corrupt leader of South Vietnam supported by the U.S. |
| Vietcong | North Vietnamese forces that specialized in using guerilla warfare |
| SEATO | organization of Sout East Asian countries and the U.S. to protect one another |
| Ho Chi Minh Trail | route used by Vietcong to get supplies, men, and arms into South Vietnam through Laos and Cambodia |
| 26th Amendment | lowered the voting age to 18 in the United States |
| Mylai massacre | 350 Vietnamese civilians were killed by U.S. forces causing outrage amonst the American public |
| Pentagon Papers | stated that U.S. government's goal was not to eliminate communism in Vietnman, but rather to avoid a humiliating defeat |
| 17th Parallel | dividing line between North and South Vietnam |
| Domino effect | fears that if Vietnam fell to communist agression, other countries in the region would soon follow |
