Constitution of the United States Was Established on September 17, 1787

September 17th is the day the Constitution of the United States was created.

The Constitution of the United States was created on this day in 1787 and came into effect in 1788.

In the United States, each state also has its own constitution.

・References
– https://tama.wtf/jp/society/today/constitution-of-the-united-states
– We the People: Constitution of the United States