1: The Vietnam War The u.s. had to help other countries fight in the Vietnam War. | The Vietnam war was the shortest war that was ever going on in Vietnam or the world after world war 2. The u.s. had to step in to help out other countries in the Vietnam war.
2: Geneva conference-Divided Vietnam in the mid 1950s at 17 degrees latatude in Virtnam.
3: cambodia-communist sanctuatries in the early 1970s and bombing and invasion of the us troops.