The fall of Saigon in 1975 marked the end of the Vietnam War and the reunification of Vietnam under communist control. This event led to significant geopolitical changes in Southeast Asia, as it represented a victory for communist forces over the U.S.-backed South Vietnam government. The fall also sparked a mass exodus of Vietnamese people, leading to a large refugee crisis. Additionally, it impacted U.S. foreign policy, leading to a period of introspection regarding military interventions. The event symbolized the limitations of American power and the complexities of Cold War dynamics.