On March 29, 1973, two months following the Paris Peace Accords, the U.S. pulled the last of its troops out of Vietnam. How long after the troop pull-out did the South Vietnam capital of Saigon fall to the forces of North Vietnam?

On March 29, 1973, two months following the Paris Peace Accords, the U.S. pulled the last of its troops out of Vietnam. How long after the troop pull-out did the South Vietnam capital of Saigon fall to the forces of North Vietnam?