Answer:
James Madison was one of the Founding Fathers of the United States and is famous for his contribution towards the U.S. Constitution. Here are three of his major accomplishments:
Father of the Constitution: Madison is regarded as the Father of the Constitution because he drafted the Virginia Plan, an outline for a new constitution; directed the Philadelphia Convention towards forming a new constitution; and contributed to the Federalist Papers, which promoted the ratification of the constitution 12.
Father of the Bill of Rights: Madison is also regarded as the Father of the Bill of Rights, the first ten amendments to the Constitution. He sponsored the Bill of Rights and played a key role in its adoption 12.
Fourth President of the United States: Madison served as the fourth President of the United States from 1809 to 1817. During his presidency, he focused on an effective taxation system and a well-funded standing professional military. The foreign affairs during his presidency were dominated by the War of 1812 with Great Britain