the Potomac River site can be completed. July 26 – Alexander Hamilton's Assumption Bill, giving effect to his First Report on the Public Credit, is passed in the United States Congress, allowing the federal government to assume the consolidated debts of the U.S. states. July 27 – The Convention of Reichenbach is signed between Prussia and Austria. July 31 – Inventor Samuel Hopkins becomes the first to be issued a U.S. patent (for an improved method of making potash). August 4 – A newly passed U.S. tariff act creates the system of cutters for revenue enforcement (later named the United States Revenue Cutter Service), the forerunner of the Coast Guard. August 14 – The Treaty of Värälä ends the Russo-Swedish War. September 25 – The Peking Opera is born, when the Four Great Anhui Troupes introduce Anhui opera to Beijing, in honor of the Qianlong Emperor's 80th birthday. September 30 – Leopold II, Holy Roman Emperor starts to rule. October–December October 7 – Commissioners appointed by the New York legislature announce the successful conclusion of negotiations between New York and Vermont, concerning disputed real-estate claims, and the consent of New York's legislature to the admission to the Union of the state of Vermont as the 14th State (which was formed within what New York claimed as its territory, under an Order in Council, that King George III issued on July 20, 1764). October 10 – At least 3,000 people die in Algeria when an earthquake and tsunami strikes the city of Oran. The city is destroyed and Spanish forces eventually flee in 1792. October 20 – The Harmar Campaign ends in a defeat of U.S. Army General Josiah Harmar and Colonel John Hardin by the Western Confederacy of Indians, led by Chief Mihšihkinaahkwa of the Miami tribe and Weyapiersenwah of the Shawnee at Kekionga (now Fort Wayne, Indiana). October to December - Vincent Ogé leads a rebellion of freed blacks in Saint-Domingue. The rebellion is suppressed and Ogé executed. November 24 – France's Constituent Assembly passes a law requiring all Roman Catholic priests to swear an oath of acceptance of the new French Constitution. November 27 – U.S. President George Washington and his wife, Martha Washington, arrive in the new temporary U.S. capital, Philadelphia, and take up residence at the President's House located at 524 Market Street. December 2 – Holy Roman Empire forces recapture Brussels, bringing an end to