What were 5 effects of the vietnam war on the nation

Vietnam War known as Second Indo China War or American war which is between Cambodia, Laos and Vietnam from 1955. Effect of Vietnam war was

1.It was fought between North Vietnam and south Vietnam where north Vietnam massacred south Vietnamese.

2.South Vietnam regime was collapsed, and Vietnam was united

3.Vietnam Infrastructure was destroyed, and thousands of people killed due to chemical warfare by Americans.

4.More than 700,000 veterans of Vietnam suffered psychological after-effects.

5.America had failed Loss of Confidence to contain communism abandoning the Truman Doctrine.

i honesty don't know, good luck tho dawg

letter a is the answer