Denmark became the first European nation to ban its trade in enslaved Africans, though the ban would not take effect until 1803.

The United States Congress passed the Coinage Act, establishing the U.S. Mint and creating the decimal-based dollar currency system still used today.

Twenty-four New York stockbrokers signed the Buttonwood Agreement under a buttonwood tree, founding what became the New York Stock Exchange.

Kentucky becomes the 15th U.S. state, the first admitted west of the Appalachian Mountains, carved from Virginia's frontier territory.

Parisian revolutionaries and National Guardsmen stormed the Tuileries Palace, slaughtering the Swiss Guard and effectively ending the French monarchy.