Johnstown, Pennsylvania in the context of "Shade Township, Pennsylvania"

Western Pennsylvania is a region in the Commonwealth of Pennsylvania encompassing the western half of the state. Pittsburgh is the region's principal city, with a metropolitan area population of about 2.4 million people, and serves as its economic and cultural center. Erie, Altoona, and Johnstown are its other metropolitan centers. As of the 2020 census, Western Pennsylvania had a population of 3,753,944.

Although the Commonwealth does not designate Western Pennsylvania as an official region of the state, it has retained a distinct identity since the colonial-era Province of Pennsylvania because of its geographical distance from Philadelphia, the state's first settlement, and because of its topographical separation from eastern Pennsylvania, including the Appalachian Mountains, which characterizes the region. The strong cultural identity of Western Pennsylvania is reinforced by the state supreme court, which convenes in Pittsburgh in addition to Harrisburg and Philadelphia.

The Allegheny Mountain Range (/ˌælɪˈɡeɪni/ AL-ih-GAY-nee)—also spelled Alleghany or Allegany, less formally the Alleghenies—is part of the vast Appalachian Mountain Range of the Eastern United States and Canada. Historically, it represented a significant barrier to westward land travel and development. The Alleghenies have a northeast–southwest orientation, running for about 300 miles (480 km) from north-central Pennsylvania southward, through western Maryland and eastern West Virginia.

The Alleghenies comprise the rugged western-central portion of the Appalachians. They rise to 4,862 feet (1,482 m) in northeastern West Virginia. In the east, they are dominated by a high, steep escarpment known as the Allegheny Front. In the west, they slope down into the closely associated Allegheny Plateau, which extends into Ohio and Kentucky. The principal settlements of the Alleghenies are Altoona, State College, and Johnstown, Pennsylvania; and Cumberland, Maryland.

The Johnstown Flood, sometimes referred to locally as the Great Flood of 1889, occurred on Friday, May 31, 1889, after the catastrophic failure of the South Fork Dam, located on the south fork of the Little Conemaugh River, 14 miles (23 km) upstream of the town of Johnstown, Pennsylvania, United States. The dam ruptured after several days of extremely heavy rainfall, releasing 14.55 million cubic meters of water. With a volumetric flow rate that temporarily equaled the average flow rate of the Mississippi River, the flood killed 2,208 people and accounted for US$17,000,000 (equivalent to about $590,000,000 in 2024) in damage.

The American Red Cross, led by Clara Barton and with 50 volunteers, undertook a major disaster relief effort. Support for victims came from all over the United States and 18 foreign countries. After the flood, survivors suffered a series of legal defeats in their attempts to recover damages from the dam's owners. This led in the 20th century to American law changing from a fault-based regime to one of strict liability.

The Bethlehem Steel Corporation was an American steelmaking company headquartered in Bethlehem, Pennsylvania. Until its closure in 2003, it was one of the world's largest steel-producing and shipbuilding companies. At the height of its success and productivity, the company was a symbol of American manufacturing leadership in the world, and its decline and ultimate bankruptcy and liquidation in the late 20th century is similarly cited as an example of America's diminished manufacturing leadership during the late 20th century. From its founding in 1857 through its 2003 dissolution, Bethlehem Steel's headquarters were based in Bethlehem, Pennsylvania, in the Lehigh Valley region of eastern Pennsylvania. Its primary steel mill manufacturing facilities were located in Bethlehem, Pennsylvania, and were later expanded to include a major research laboratory in Bethlehem, and various additional manufacturing plants in Sparrows Point, Maryland; Johnstown, Pennsylvania; Lackawanna, New York; and Burns Harbor, Indiana.

The company's steel was used in the construction of many of the nation's largest and most famed structures. Among major buildings, Bethlehem produced steel for 28 Liberty Street, the Empire State Building, Madison Square Garden, Rockefeller Center, and the Waldorf Astoria hotel in New York City and Merchandise Mart in Chicago. Among major bridges, Bethlehem's steel was used in constructing the George Washington Bridge and Verrazzano–Narrows Bridge in New York City, the Golden Gate Bridge in San Francisco, and the Peace Bridge between Buffalo and Fort Erie, Ontario.

Somerset County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 74,129. Its county seat is Somerset. The county was created from part of Bedford County on April 17, 1795, and named after the county of Somerset in England. The county is part of the Southwest Pennsylvania region of the state.

Somerset County comprises the Somerset, PA micropolitan statistical area, which is included in the Johnstown–Somerset, PA combined statistical area.