Why did the South Vietnamese leadership fail during the Vietnam War?

Question

Was it because they wanted everyone to be strictly Catholic?

Answer 1

South Vietnam's president, Nguyen Van Thieu, took advantage of Hanoi's decision to refit and re-equip, extending the South Vietnamese hold on territory wherever possible. The result was that the South Vietnamese army was spread out over a large area and by late 1974 was ripe for an attack. Its condition was worsened by the drying up of US assistance, a drastic increase in inflation, and, as always, flagrant corruption.

Answer 2

Actually the south lose most power when the US quit fighting and return home. That make some of the south fighter lose comfident
because they have to fight by themselves against north and other countries on the North side. The north was also convincive
They have lots of Vietnamese on their sides until people discover it was so bad.

Answer 3

Because the U.S. had left South Vietnam on its own in 1973. The U.S. used a lot of money to support South Vietnam and its fighting forces. Back in the U.S., there were many protests of what was going on in the war.

Answer 4

More because they were more interested in enriching themselves and their friends than they were in the success of their country. Contrast this with the successful anti-Communist action in Greece after WW2. The Greeks hated the Communists, largely because they were atheistic, but also out of a fierce independence, and they were able to win.