Answer:
The main way how Montesquieu influenced the Founding Fathers is through his ideas about the separation of powers. That is why when United States were created different branches of power were created. His ideas also created a starting point for the creation of American Constitution.
Step-by-step explanation:
As it is known ideas of Enlightenment influenced heavily the Founding Fathers. Montesquieu influenced them a lot, especially Madison. That is why when different political bodies in United States were created - President, Supreme Court and Congress, we can say that this was mostly under influence of his ideas.