CHAPTER 4
HISTORIC AND CULTURAL RESOURCE PLAN
■ HISTORICAL DEVELOPMENT
As discussed earlier in Chapter Three, the growth of Allegheny County and its communities has been strongly influenced by the Three Rivers, abundant natural resources – especially high quality bituminous coal deposits – and proximity to major transportation routes.
Hundreds of millions of years ago, the land that would become Allegheny County was covered by a shallow ocean. The flat sea floor was uplifted and altered by erosion, resulting in a landscape characterized by steep hills with relatively narrow ridge tops and steep-sided valleys. The Allegheny and Monongahela rivers converged to form the Ohio River. Through geologic time these rivers carved the Allegheny Plateau into the rugged terrain of today.
The land is underlain by limestone, sandstone, shale and coal, which helped to fuel the emergence of our County's industry in the late 19th century.
NATIVE AMERICANS
Evidence from Meadowcroft Rockshelter in neighboring Washington County suggests that American Indians inhabited the area as early as 16,000 to 17,000 years ago, raising new theories about when people first inhabited North America.
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The region was inhabited by the Delaware, Seneca, Shawnee and Mingo peoples when European traders and trappers arrived to work along the County's rivers. Native Americans were largely nomadic, hunting and gathering food for survival. However, a few permanent settlements were established along the rivers, notably Shannopin's Town (a Delaware village near present-day Lawrenceville), Logstown (present-day Ambridge), and Chartier's Old Town (a Shawnee village in present-day Tarentum). Their homes were built of log huts and bark. The Native Americans bartered with fur traders from England and France, trading beaver pelts for goods such as salt, blankets, guns and gunpowder. The French took care to befriend the Indians, a friendship that would become very important.
THE FRENCH AND INDIAN WAR
"As I got down before the Canoe, I spent some Time in viewing the Rivers, & the Land in the Fork, which I think extremely well situated for a Fort; as it has the absolute Command of both Rivers..." – George Washington, 1753
The French and Indian War had a significant impact on Allegheny County. Both the French and the British considered Allegheny County to be their territory, and tension between the two countries would eventually begin the French and Indian War.
In 1749, the French occupied and officially claimed land that would become Allegheny County. The British realized there was militarily-strategic importance to the site at the confluence of the Monongahela and Allegheny Rivers. In 1753, George Washington left Williamsburg, Virginia to deliver a note ordering the French to leave the Ohio Valley region. Washington arrived at Ft. LeBoef in Erie County to deliver his message to the French. The French refused to vacate the region.
To intimidate the French, British colonists began the construction of Fort Prince George at the site of present-day Pittsburgh. In 1754, the French overtook the fort before its construction was complete and finished building it themselves, renaming it Fort Duquesne. In 1755, the defeat of General Braddock at Turtle Creek opened the Pennsylvania frontier to widespread attack by French allied Native Americans. In 1756, Britain declared war on France.