Final answer:
The Bessemer process allowed for the mass production of iron through a revolutionary steel-making technique during the Second Industrial Revolution.
Step-by-step explanation:
The Bessemer process, named after Sir Henry Bessemer of England, allowed for the mass production of iron. This process revolutionized the steel-making industry in the United States during the Second Industrial Revolution. It involved melting wrought iron in large furnaces, making it more cost-effective and efficient.