USA HISTORY

Detailed explanation-1: -In addition to its riches in coking coal, three interrelated factors destined Pittsburgh to be the nation’s steel capital: the Bessemer process, the railroads and Andrew Carnegie. The Bessemer steel-making process consisted of air blown through molten iron in a five-to-seven-ton, egg-shaped Bessemer converter.

Detailed explanation-2: -Well known as the ‘Steel City, ’ Pittsburgh has long been recognized as the epitome of labor and capital power, highlighted from the mid-19th century through much of the 20th century.

Detailed explanation-3: -Most people recognize one thing about Pittsburgh’s history, that it was known as an industrial hub for coal mining and steel production.

Detailed explanation-4: -Near the junction of the Allegheny and the Monongahela, Andrew Carnegie would build an empire of steel, transforming Pittsburgh into the biggest industrial powerhouse in the world.