Answer:
A and D are both the answer of your question but I prefer A
The term "trias politica" or "separation of powers" was coined by Charles-Louis de Secondat, baron de La Brède et de Montesquieu, an 18th century French social and political philosopher. ... The intent is to prevent the concentration of power and provide for checks and balances.
Hopes it helps you!
"The United States withdrew its support." was perhaps the most immediate result of Diem's refusal to hold elections, but it should be noted there were others as well.
