The reasons why something was learned is less important than helping the patient change the behavior. Belief systems include the beliefs and values shared by members of a racial, ethnic, or social group as well as those held by individuals. Belief systems develop over time and reflect the ideology, religion, politics, social structure, and economic activities of a particular group. Beliefs influence all decisions including economic ones. The Bessemer steel process is the process of removing impurities from iron to make steel.
Steel is less brittle and stronger than iron.
Industry needed steel but was limited by the small quantity that could be manufactured using traditional methods to remove impurities. In the 1850s, British inventor Henry Bessemer discovered that a blast of hot air directly on melted iron reduced the impurities in iron. As a result, steel manufacturing increased nearly 20 fold during the era of the Industrial Revolution in America. Steel bridges, steel rails for railroads, and the production of automobiles were major technological achievements. Steel reinforcements in skyscrapers aided urbanization, and increased production of household appliances brought steel into the home.