Why do you think the U. S. refused to acknowledge Haiti’s independence?

In fact, its silence is very telling: it was frightened because the Haitian Revolution threatened its economic interests. ... They also pressured the United States government to refuse to recognize Haitian independence, which it did until 1862, after Southern states seceded from the Union.

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Because they are worried and cannot understand them. They are worried that the Haitian Revolution will extend to America.

they were all fought in the middle east during ww1

what does your friend need with?