Final answer:
Montesquieu was the most influential towards the U.S. Constitution due to his ideas on the separation of powers.
Step-by-step explanation:
The individual who was most influential towards the U.S. Constitution was Montesquieu. His ideas on the separation of powers greatly influenced the framers of the Constitution. Montesquieu believed in dividing the powers of government into different branches, which is evident in the three branches of the U.S. government: the legislative, executive, and judicial branches.
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