Why did the United States aid the French in their efforts to keep control of Vietnam after World War II? * A. because U. S. leaders wanted to prevent the spread of communism

B. because the Communists had gained control of China

C. because France was a U. S. ally and asked for help

D. All of the Above

A is the correct answer because of the US being in fear of communism spreading even more than just Vietnam.

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while it was true that the cotton gin reduced the labor of removing seeds, it did not reduce the need for slaves to grow and pick the cotton.

explanation:

before eli whitney's invention of the cotton gin, picking and cleaning cotton was a slow, labor-intensive job. workers, usually slaves, had to pick the seeds from the cotton fibers by hand. this invention made it possible to grow large amounts of cotton on big farms and make money.