All 10 of them I believe <span />
The first reason was the Bolshevik Revolution that happened in 1917 and the second major reason was the strikes organized by the workers in the United States. The government was afraid of the chance that communism would take hold in the United States and that is the reason for the raids and prosecution of the individuals who were thought to be anti-American.
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Deregulation was a process of removing federal authority and regulations from certain industries in order to help them prosper more easily. Some industries boomed and some busted, most notable being the savings and loans industry with banks having an easier time to do their business with the people. Some industries weren't affected at all like the agricultural industry, most notably farmers.
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