what are the largest industries in the us
Economy of the United States The United States is the world's second-largest manufacturer, with a 2013 industrial output of US$2.4Â trillion. Its manufacturing output is greater than of Germany, France, India, and Brazil combined.[266] Its main industries include petroleum, steel, automobiles, construction machinery, aerospace, agricultural machinery, telecommunications, chemicals, electronics, food processing, consumer goods, lumber, and mining.
History of the steel industry (1850–1970) In 1869 iron was already a major industry, accounting for 6.6% of manufacturing employment and 7.8% of manufacturing output. By then the central figure was Andrew Carnegie,[35] who made Pittsburgh the center of the industry.[36] He sold his operations to US Steel in 1901, which became the world's largest steel corporation for decades.