The answer is A, checks and balances system. The power of courts determines what the government does, in accords with what the Constitution provides.
The process by which a highly developed population's rate of growth will stabilize is called Demographic Transition. Demographic transition is a model that describes the change in population over time. It is the transition in the birth and death rates over the past two hundred years.
The main reason was to prevent communism in Vietnam Also to Help reduce the french influence towards Vietnam. Hope this helps!
