USA HISTORY

Detailed explanation-1: -The Second Industrial Revolution By 1870, Bessemer steel was used for building ships and railways. It was especially useful for railroads, as it could hold heavier and faster engines and cars. At the same time, factories were becoming more productive due to the increase in mechanization.

Detailed explanation-2: -The Bessemer process was the first inexpensive industrial process for the mass production of steel from molten pig iron before the development of the open hearth furnace. The key principle is removal of impurities from the iron by oxidation with air being blown through the molten iron.

Detailed explanation-3: -Bessemer process, the first method discovered for mass-producing steel. Though named after Sir Henry Bessemer of England, the process evolved from the contributions of many investigators before it could be used on a broad commercial basis.

Detailed explanation-4: -In the late 18th century, during the Industrial Revolution in England, the invention of the steam engine by James Watt enabled the blasting of air into the blast furnace with a machine. This made the mass production of iron possible.