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Pittsburgh, 1900-1945

By 1900, downtown Pittsburgh, known as the Golden Triangle, had become a classic central business di....

Important places

Pittsburgh (1,170)

Counties

Allegheny (1,224)

Regions

Pennsylvania (4,458)

Countries

United States (64,950)

Other geographical areas

Allegheny Plateau (173)
Appalachian Mountains (1,111)