Original sentence: After the fall of Saigon on April 30, 1975, the Provisional Revolutionary Government of the Republic of South Vietnam, or Vietcong, nominally governed South Vietnam for a time, however it was seen as a puppet government under the command of the North Vietnamese government.In practice, the newly conquered territory was administered by the PAVN
Edited sentence: After the fall of Saigon on April 30, 1975, the Provisional Revolutionary Government of the Republic of South Vietnam, lead by Vietcong, nominally governed South Vietnam for a time