<prompt> Rondedzero yevatungamiri veSouth Vietnam, kubva pakagadzwa Autonomous Republic of Cochinchina muna 1946, uye kupatsanurwa kweVietnam muna 1954 kusvika kudonha kwe  <response>: yeRepublic of Vietnam muna 1975, uye kubatanidzwazve kweVietnam muna 1976. 