Which event occurred after the United States invaded Cambodia and increased its involvement in the Vietnam War?

A. President John F. Kennedy's assassination

B. burglary at the Watergate complex

C. Kent State shooting

D. Attica Prison riot

During the cold war, the American officials became concerned that the region will move to Communism thus leading for United States to be involve in the events happening in Vietnam that is why American troops are being send to Vietnam to fight. Three weeks after Diem's death, the A. President John F. Kennedy's assassination happened.