The term "South Vietnamese" refers to the people who lived in the southern part of Vietnam during the Vietnam War, specifically from 1955 to 1975. This region was officially known as the Republic of Vietnam, which was established as a separate state from the communist North. The South Vietnamese government, supported by the United States and other allies, aimed to prevent the spread of communism in the region. The South Vietnamese population was diverse, comprising various ethnic groups, including Kinh, Tay, and Hoa. Many South Vietnamese were involved in the military, government, and civilian sectors, contributing to the country's economy and culture. The fall of Saigon in 1975 marked the end of the Republic of Vietnam, leading to the reunification of Vietnam under communist control.