USA HISTORY

Detailed explanation-1: -Andrew Carnegie: Steel Magnate Over the next few decades, he created a steel empire, maximizing profits and minimizing inefficiencies through ownership of factories, raw materials and transportation infrastructure involved in steel making. In 1892, his primary holdings were consolidated to form Carnegie Steel Company.

Detailed explanation-2: -Carnegie adopted a new process invented by Sir Henry Bessemer that allowed steel to be made from iron more efficiently and quickly. This lowered the cost for steel, expanding the market. While this Bessemer steel didn’t work for bridges or buildings, it worked well for railways.

Detailed explanation-3: -Because of his position, Carnegie had knowledge of the war machine during the Civil War and saw there was a large need for iron products. After the war he used this new knowledge to switch his business interests from railroads and telegraphs to the ironworks industry, eventually founding the Keystone Bridge Works.

Detailed explanation-4: -By age 30, Carnegie had amassed business interests in iron works, steamers on the Great Lakes, railroads, and oil wells. He was subsequently involved in steel production, and built the Carnegie Steel Corporation into the largest steel manufacturing company in the world.