The city features 30 skyscrapers, two inclined railways, a pre-revolutionary fortification and the Point State Park at the confluence of the rivers.The city developed as a vital link of the Atlantic coast and Midwest, as the mineral-rich Allegheny Mountains made the area coveted by the French and British empires, Virginians, Whiskey Rebels, and Civil War raiders.In the 1830s, many Welsh people from the Merthyr steelworks immigrated to the city following the aftermath of the Merthyr Rising.By the 1840s, Pittsburgh was one of the largest cities west of the Allegheny Mountains.By 1815, Pittsburgh was producing significant quantities of iron, brass, tin, and glass.
Both the Colony of Virginia and the Province of Pennsylvania claimed the region under their colonial charters until 1780, when they agreed under a federal initiative to extend the Mason–Dixon line westward, placing Pittsburgh in Pennsylvania.
British General Edward Braddock was dispatched with Major George Washington as his aide to take Fort Duquesne.
The British and colonial force were defeated at Braddock's Field.
The following year, the Pittsburgh Post-Gazette was started, and in 1787, the Pittsburgh Academy was chartered.
Unrest during the Whiskey Rebellion of 1794 resulted in federal troops being sent to the area.