In New York City, the United States House of Representatives achieves its first quorum and elects Frederick Muhlenberg of Pennsylvania as its first Speaker.

The United States House of Representatives is a chamber of the bicameral United States Congress; it is the lower house, with the U.S. Senate being the upper house. Together, the House and Senate have the authority under Article One of the U.S. Constitution in enumerated matters to pass or defeat federal government legislation, known as bills. Those that are also passed by the Senate are sent to the president for signature or veto. The House's exclusive powers include initiating all revenue bills, impeaching federal officers, and electing the president if no candidate receives a majority of votes in the Electoral College.

A quorum is the minimum number of members of a group necessary to constitute the group at a meeting. In a deliberative assembly, a quorum is necessary to conduct the business of that group. In contrast, a plenum is a meeting of the full body. A body, or a meeting or vote of it, is quorate if a quorum is present.

Frederick Augustus Conrad Muhlenberg was an American minister and politician who was the first speaker of the United States House of Representatives from 1789 to 1791 and again from 1793 to 1795. Muhlenberg served as the first dean of the United States House of Representatives as well. A member of the Federalist Party, he was delegate to the Pennsylvania state constitutional convention and a member of the U.S. House of Representatives from Pennsylvania and a Lutheran pastor by profession, Muhlenberg was born in Trappe, Pennsylvania. His home, known as the Speaker's House, is now a museum and is currently undergoing restoration to restore its appearance during Muhlenberg's occupancy.

Pennsylvania, officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, Maryland to its south, West Virginia to its southwest, Ohio and the Ohio River to its west, Lake Erie and New York to its north, the Delaware River and New Jersey to its east, and the Canadian province of Ontario to its northwest via Lake Erie. Pennsylvania's most populous city is Philadelphia, while the capital of the state is Harrisburg. It is the fifth-most populous U.S. state, with over 13 million residents as of the 2020 United States census, as well as being the ninth-highest by population density and the 33rd-largest state by land area. The largest metropolitan statistical area is the southeastern Delaware Valley, including and surrounding Philadelphia, the state's largest and nation's sixth-most populous city. The second-largest metropolitan area, Greater Pittsburgh, is centered in and around Pittsburgh, the state's second-largest city.