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Timeline of United States inventions (1890–1945) Robert H. Goddard (1882–1945), the American physicist and inventor who built and launched the world's first liquid-propellant rocket on March 16, 1926. [1] Goddard held 214 patents for his inventions and pioneering innovations in liquid-propelled, guided, and multi-stage rockets. [2] This ...
The city of Philadelphia was founded and incorporated in 1682 by William Penn in the English Crown Province of Pennsylvania between the Delaware and Schuylkill rivers. Before then, the area was inhabited by the Lenape people. Philadelphia quickly grew into an important colonial city and during the American Revolution was the site of the First ...
See Battle of Fallen Timbers. [ 1] Downtown Cincinnati in 2010. The history of Ohio as a state began when the Northwest Territory was divided in 1800, and the remainder reorganized for admission to the union on March 1, 1803, as the 17th state of the United States. The recorded history of Ohio began in the late 17th century when French ...
www .phila .gov. Philadelphia County is the most populous of the 67 counties of Pennsylvania and the 24th-most populous county in the nation. As of the 2020 census, the county had a population of 1,603,797. [1] Its county seat is Philadelphia, the nation's sixth-largest city. The county is part of the Southeast Pennsylvania region of the state.
Map of Philadelphia County prior to consolidation. The Act of Consolidation, more formally known as the act of February 2, 1854 (P.L. 21, No. 16), is legislation of the Pennsylvania General Assembly that created the consolidated City and County of Philadelphia, expanding the city's territory to the entirety of Philadelphia County and dissolving the other municipal authorities in the county.
Website. www.phila.gov. Philadelphia, colloquially referred to as Philly, is the most populous city in the U.S. state of Pennsylvania [ 11] and the sixth-most populous city in the nation, with a population of 1,603,797 in the 2020 census. The city is the urban core of the larger Delaware Valley, also known as the Philadelphia metropolitan area ...
Pittsburgh (/ ˈ p ɪ t s b ɜːr ɡ / PITS-burg) is a city in and the county seat of Allegheny County, Pennsylvania, United States. It is the second-most populous city in Pennsylvania, after Philadelphia, and the 68th-most populous city in the U.S., with a population of 302,971 as of the 2020 census.
The telegraph represented a disruptive innovation in the history of the United States from its invention in the 1830s onward by quickly becoming a vital part of the nation's communication infrastructure. Its relative importance declined with the spread of telephones in the 20th century. Telegraph service permitted short texts to be sent cheaply ...