Bessemer Process: The Bessemer process was an efficient method developed by Henry Bessemer for producing steel by blowing air through molten iron to remove impurities.
Industrial Revolution: The Industrial Revolution was a period of rapid industrialization that occurred in the 18th and 19th centuries, during which technological advancements transformed manufacturing processes and led to increased production of goods.
Railroads: Railroads were crucial transportation networks that connected different regions during Westward expansion, playing a significant role in promoting economic growth and facilitating westward migration.