September 1789

Wednesday 02:

The United States Department of the Treasury is founded.

Friday 11:

Alexander Hamilton is appointed as first Secretary of the Treasury.

Tuesday 15:

The United States Department of State is established (formerly known as Department of Foreign Affairs).

Tuesday 22:

The position of United States Postmaster General established.

Thursday 24:

The United States Post Office Department is established.

Friday 25:

The Congressional Apportionment Amendment to the United States Constitution is proposed at the U.S. Congress

Saturday 26:

Thomas Jefferson is appointed the first United States Secretary of State, John Jay is appointed the first Chief Justice of the United States, Samuel Osgood is appointed the first United States Postmaster General, and Edmund Randolph is appointed the first United States Attorney General.

Tuesday 29:

1789 - The first U.S. Congress adjourns.