What was the result of the america's failure in vietnam?

a communism was not contained in vietnam.

b vietnam did not become unified.

c a cease-fire agreement was not signed.

d america's containment policy was abandoned.

Explanation:

The US withdrew its forces from Vietnam in 1973.  By 1975, Saigon, the capital of South Vietnam, fell to the North Vietnamese communist forces.  South Vietnam unconditionally surrendered to North Vietnam on April 30, 1975.  All of Vietnam became united under communist control.

There were also successful communist invasions of Laos and Cambodia also

usually her father was the one that controlled it after the death of the husband

nothing certain is known about what happened, but it seems that the country declined gradually, perhaps due to bad government, or, more likely, due to a series of bad harvests, which resulted in widespread and recurrent famine.