President Nixon sent US forces to Cambodia in 1970 to...

option d Explanation: On April 28, 1970, the president authorized a preemptive strike in Cambodia, sending US troops across the border from South Vietnam in order to destroy Viet Cong base camps that were providing support to the Communists fighting in South Vietnam.

i would say your answer is a)

sorry if im wrong

answer by mimiwhatsup: c. british impressment involved attacking and boarding neutral merchant ships and forcing the captured crew to serve in the royal navy.

source: "british impressment, or practice of taking or seizing american sailors from american trading ships and forcing them into the british navy." ()