Why was the U. S. so concerned about the Cuban Revolution?
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"I think it's the most fervent supporters of the Cuban Revolution viewed the United States as an imperialist threat thanks to the long history of U.S. intervention in Cuba dating back to the 19th century and the U.S.'s continuing efforts to undermine Castro's government."

Explanation:

this is not a question its simply asking you to read and write a few sentences and   the question on the bottom its fairly easy, you can do this!

b - those executed came from every social and economic class