Who was the leader of Vietnam who , in the aftermath of the war , ordered the government to embark on a mass campaign of collectivization of farms and factories ?
Following the Fall of Saigon on April 30 , 1975 , the South Vietnam briefly came under the authority of a Provisional Revolutionary Government , a puppet state under military occupation by North Vietnam , before being officially reunified with the North under Communist rule as the Socialist Republic of Vietnam on July 2 , 1976 .