What city in Vietnam is the most populous?

Explanation

Ho Chi Minh is a Vietnamese city. It was formerly called Saigon and is Vietnam's biggest city with 5.5 million inhabitants. It is located on the western shores of the Saigon River. The city was the capital of South Vietnam from 1954 to 1975, and of the Republic of South Vietnam 1965-1976. It has since been administered as a province.