Here are a couple of things:
The Impact on America - 58,000 Americans died in Vietnam, The war had cost so much that President Johnson's Great Society programme of social reform had to be cancelled, Loss of confidence, 700,000 Vietnam veterans suffered psychological after-effects.
The Impact on Vietnam - Vietnam was ruined, its infrastructure was destroyed; thousands of people had been killed, farmland polluted by American chemical warfare. It remains one of the poorest countries in the world.
Vietnam United - Even though the American's left Vietnam in 1973, they continued to support the South Vietnamese Army with financial and military aid. In April 1975 the South Vietnamese regime collapsed and Vietnam was united.
