WHAT ALL HAPPENED MARCH TO SEPTEMBER 1791
Find out what all happened March to September 1791

Beginning of the Haitian Slave Revolution in Saint-Domingue. (22. August 1791)

HMS Pandora sinks after having run aground on a reef the previous day. (30. August 1791)

Vermont is admitted to the United States as the fourteenth state. (4. March 1791)

France becomes the first country to emancipate its Jewish population. (28. September 1791)

The Constitutional Act of 1791 is introduced by the British House of Commons in London which envisages the separation of Canada into Lower Canada (Quebec) and Upper Canada (Ontario). (4. March 1791)

Washington, D.C., the capital of the United States, is named after President George Washington. (9. September 1791)

John Fitch is granted a United States patent for the steamboat. (26. August 1791)

The Papal States lose Avignon to the French Empire. (14. September 1791)

The National Constituent Assembly in Paris is dissolved; Parisians hail Maximilien Robespierre and Jérôme Pétion as "incorruptible patriots". (30. September 1791)

Long-distance communication speeds up with the unveiling of a semaphore machine in Paris. (2. March 1791)

The Priestley Riots drive Joseph Priestley, a supporter of the French Revolution, out of Birmingham, England. (14. July 1791)

Members of the French National Guard under the command of General Lafayette open fire on a crowd of radical Jacobins at the Champ de Mars, Paris, during the French Revolution, killing as many as 50 people. (17. July 1791)

King Louis XVI of France accepts the new constitution. (13. September 1791)

The Treaty of Sistova is signed, ending the Ottoman–Habsburg wars. (4. August 1791)

King Louis XVI of France and his immediate family begin the Flight to Varennes during the French Revolution. (21. June 1791)

The first performance of The Magic Flute, the last opera by Mozart to make its debut, took place at Freihaus-Theater auf der Wieden in Vienna, Austria. (30. September 1791)

Maximilien Robespierre proposes the Self-denying ordinance. (15. May 1791)

American troops destroy the Miami town of Kenapacomaqua near the site of present-day Logansport, Indiana in the Northwest Indian War. (7. August 1791)