Who was the main author of the Constitution of the United States?

The main author of the Constitution of the United States is indeed James Madison. He is often referred to as the "Father of the Constitution" due to his pivotal role in the drafting and promoting of the document. Madison not only contributed to the writing of the Constitution but was also a key figure in the debate that followed in the state ratifying conventions, where he defended its principles.

Madison's influence is evident in the structure of the government laid out in the Constitution, especially the system of checks and balances designed to prevent any one branch from becoming too powerful. His ideas on federalism and a strong national government were instrumental in shaping the framework of American governance that we see today.

While other figures, such as Benjamin Franklin, George Washington, and Alexander Hamilton, played significant roles in the founding of the United States and the development of its government, Madison is recognized for his authorship of the Constitution itself. His meticulous notes during the Constitutional Convention also provide invaluable insights into the framers' intentions and the discussions that shaped the final document.