Answer;
The main challenges faced by the new democratic republic of Vietnam setup in 1945 were;
-The French tried to regain control by using the emperor, Bao Dai as their puppet.
- Due to French attack, Viet Minh's army was forced to retreat to the hills.
- After eight years of fighting, the French were defeated in 1954, at Dien Bieu Phu.
-The French soldiers including their commanders and generals were arrested.