* The Bill of Rights was ratified. The first ten amendments to the U.S. Constitution were adopted by the states, guaranteeing basic rights and freedoms to all citizens. This was a major milestone in American history, securing fundamental freedoms like speech, religion, and the press.
* The first U.S. Mint was established. Located in Philadelphia, it began producing coins for the newly formed nation.
* The first U.S. Census was conducted. The census counted the population of the country, establishing a baseline for representation in Congress and other purposes.
* The Whiskey Rebellion began. This rebellion was a protest by farmers in western Pennsylvania against the federal excise tax on whiskey. It challenged the authority of the new government and ultimately resulted in President Washington sending troops to put down the uprising.
* The Society of the Cincinnati was founded. This exclusive organization was created by American Revolutionary War officers, and its founding in Philadelphia reflected the continuing influence of the war and its veterans.
In addition to these major events, Philadelphia in 1791 was a bustling center of commerce, politics, and culture. It was a time of great growth and change for the young nation, and Philadelphia played a pivotal role in shaping its future.