On January 1, 1959 Fidel Castro and his band of guerillas took over the government of President General Fulgencio Batista. Although the United States supported Castro during his revolution against Batista's regime, it was uneasy over the communist leanings of Castro. In 1960, Castro seized private lands and took over all U.S. owned businesses in Cuba and imposed heavy taxes on American goods. As a result, the United States ended diplomatic ties with Cuba and imposed a trade embargo which made Cuba turn to the Soviet Union instead. The United States made several unsuccessful attempts to overthrow the Cuban government.
During times of civic unrest such as riots, the national government can summon the national guard to its help if it thinks that the local forces cannot stop it or if the riots are going out of hand.
Some of the reasons that global migrations occurred in the 1750-1900 time period were forced labor, poverty,hope for jobs, work-related things, and for safety.
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