What concept of Charles-Louis Montesquieu's did the U.S. Founding Fathers adopt in an effort to avoid the rise of a tyrannical ruler?

Creation of checks and balances

Explanation:

Charles-Louis Montesquieu was a French philosopher. He was widely known for his philosophy of CHECKS and BALANCES. It serves as the basis of which the United States Founding Fathers adopt to avoid the rise of a tyrannical rule.

In other words, the principle of Checks and Balances led to the creation of three branches of government including legislative, executive, and judicial branches of government. All of which assist the United States' Founding Fathers to avoid the rise of a tyrannical ruler.