Who is known as the "Father of the Constitution"?

James Madison is known as the "Father of the Constitution" due to his pivotal role in the drafting and promoting of the United States Constitution and the Bill of Rights. He contributed significantly to the Constitutional Convention of 1787, where he was instrumental in formulating the Virginia Plan, which laid the framework for the structure of the new government. Additionally, Madison's writings, particularly in the Federalist Papers, helped advocate for the ratification of the Constitution by explaining its principles and addressing concerns about its implications for state sovereignty and individual liberties. His deep understanding of political philosophy and governance, coupled with his commitment to a strong federal system, earned him this esteemed title in American history.