Why did the US send military forces into Grenada 1982?

The U.S. sent military forces into Grenada in 1983, not 1982, primarily to restore order following a coup that resulted in the execution of the island's prime minister, Maurice Bishop. The intervention, known as Operation Urgent Fury, was also motivated by concerns over the presence of a Marxist government in Grenada and the safety of American citizens on the island, particularly students at a medical school. The U.S. aimed to prevent the establishment of a Soviet-backed regime in the Caribbean.