Gate in Berlin (Prussia) is finished. August 7 – George Hammond is appointed as Great Britain's first minister to the United States. August 21 – Haitian Revolution: A slave rebellion breaks out in the French colony of Saint-Domingue. August 26 – John Fitch is granted a patent for the steamboat in the United States. August 27 Declaration of Pillnitz: A proclamation by Frederick William II of Prussia and the Habsburg Leopold II, Holy Roman Emperor, affirms their wish to "put the King of France in a state to strengthen the bases of monarchic government." Third Anglo-Mysore War: Battle of Tellicherry – Off the south-west coast of India, a British Royal Navy patrol forces a French convoy bound for Mysore to surrender. September 5 An ordinance is written barring the game of baseball within 80 yards of the Meeting House in Pittsfield, Massachusetts, the first known reference to the game of baseball in North America. Declaration of the Rights of Woman and of the Female Citizen is written by activist Olympe de Gouges in response to the Declaration of the Rights of Man and of the Citizen. September 6 – Wolfgang Amadeus Mozart's opera seria, La clemenza di Tito, premières at the Estates Theatre in Prague to mark the coronation of Leopold II as King of Bohemia. September 9 – The capital of the United States, Washington, D.C., is named after the incumbent 1st President George Washington. September 12 – The first serious secondary education school open to girls in Denmark, the Døtreskolen af 1791, is founded in Copenhagen. September 13 – French Revolution: Louis XVI of France accepts the final version of the completed constitution. September 14 – French Revolution: The Papal States lose Avignon to Revolutionary France. September 25 – Mission Santa Cruz is founded by Basque Franciscan Father Fermín Lasuén, becoming the 12th mission in the California mission chain. September 28 – French Revolution: The law on Jewish emancipation is promulgated in France, the first such legislation in modern Europe. September 30 – Wolfgang Amadeus Mozart's singspiel opera The Magic Flute (Die Zauberflöte) premières at the Freihaus-Theater auf der Wieden in Vienna. October–December October 1 – French Revolution: The Legislative Assembly (France) convenes. October 9 – Mission Nuestra Señora de la Soledad is founded by Father Fermín Lasuén, becoming the 13th mission in the California mission chain. October 28 – French Revolution: The Declaration of the Rights of