Montesquieu is describing the "Separation Of Powers" which is important because it states that government should be split up into 3 branches the Legislative(which is Congress),The Executive(the President), and the Judicial(the Supreme Court). Montesquieu wanted this so that power could be divided equally and so that it wasn't just one big Government with all the power.
It would be a or d because it was during in the byzantine time
No because if every one has to agree with one party then there would be no reason to vote because you will not have a party to debate the issue
"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.
