Final answer:
James Madison is known as the 'Father of the Constitution' for his substantial contributions to the U.S. Constitution during the Philadelphia Convention of 1787. He arrived well-prepared, crafted the Virginia Plan, and played a crucial role in ensuring the Constitution's ratification.
Step-by-step explanation:
The person known as the 'Father of the Constitution' is James Madison. He was a delegate to the Philadelphia Constitutional Convention of 1787 and had a significant role in designing the basic structure of the U.S. government. Madison arrived at the convention with a well-thought-out plan, known as the Virginia Plan, and kept detailed notes of the proceedings that provide historical records of the event. His leadership and foresight, along with contributions to the Federalist Papers and the framing of the Bill of Rights, earned him this prestigious title.
Madison's keen understanding and incorporation of Montesquieu's ideas on the separation of powers, coupled with a system of checks and balances, were critical elements in the creation of the Constitution. While many influential leaders participated in the convention, James Madison's preparation and constitutional vision were unmatched. This earned him the honor of being named the 'Father of the Constitution', a testament to his pivotal role in shaping American democracy.