According to the lecture, international politics caused many Puerto Ricans and Cubans to move to the U.S. in the _________________.

The best answer is the 1950s and 1960s. Political changes, especially the Cuban Revolution and its aftermath, prompted many Cubans to migrate to the United States, while large numbers of Puerto Ricans also moved during this period. Choice C matches that time frame.

AI-written and checked against the verified answer.