<h2>A. Communism was not contained in Vietnam.</h2>
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
The Louisiana Purchase treaty is an important document in the study of Manifest Destiny because it shows the extent to which the United States was claiming land westward.
