Some commodities command massive economic, social, and political influence. This title examines the business around steel, the metal that supports many of the world’s buildings and structures. It explores the origins of steel, key technological advances, and the ways in which the industry continues to innovate today. Features include essential facts, a glossary, selected bibliography, websites, source notes, and an index. Aligned to Common Core Standards and correlated to state standards. Essential Library is an imprint of Abdo Publishing, a division of ABDO.