On what date did Congress approve the Constitution?

Congress approved the Constitution on September 17, 1787, which is recognized as the day the delegates to the Constitutional Convention signed the document in Philadelphia. This date marks a significant milestone in the formation of the United States government, as it represented the culmination of a long debate about how best to design a government that balanced federal and state powers and protected individual rights.

The other dates listed are important in American history for different reasons. July 4, 1776, is celebrated as Independence Day, marking the adoption of the Declaration of Independence. April 15, 1784, does not correspond to any significant event in relation to the Constitution. November 10, 1789, is too late, as it comes after the Constitution was already adopted and ratified, with the Bill of Rights being proposed in 1789, but not specifically tied to the approval of the Constitution itself. Understanding the correct date helps clarify the timeline of America's founding documents and the establishment of the Constitution as the supreme law of the land.