The agency which helped freed African Americans by establishing schools was Freedmen's Bureau. I hope that this is the answer that you were looking for and it has helped you.
the US was very concerned because of the fact that Cuba had nuclear missiles within range of Washington D.C. and the leader of Cuba was being heavily supported by the Russians which at this time the US were involved in a cold war with where each side was moments from launching nuclear missiles at one another.
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Explanation: Organized labor emerged from World War Il in a seemingly stronger position than ever before. But the end of the war masked significant problems. A labor backlash and red scare swept the country and caught union leaders in its grasp in the late 1940s and 1950s. Organizing victories became fewer and fewer
