The correct answer is (d) the Oregon trail
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The correct answer is D. the US naval blockade around Cuba.
The US tried to overthrow Fidel Castro in Cuba, which was unsuccessful. After that, the Soviet Union struck a deal with Castro in order to place their missiles in Cuba. The US response to that was to block Cuba from all sides until the USSR missiles are returned to them.
Answer:The Leninist branch of Marxism argues that a proletarian revolution must be led by a vanguard of "professional revolutionaries", men and women who are fully dedicated to the communist cause and who form the nucleus of the communist revolutionary movement.
Explanation:
