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Lesson 21 Vocabulary

New Industries Develop During the Age of Big Business

TermDefinition
aluminum A silvery ductile metallic element found primarily in bauxite.
boom towns Towns that grew quickly.
oil refining Process by which crude oil from the ground has been purified into useful products.
cement A fine gray powder mixed with water and small stones, sand, and gravel to make concrete.
air brakes An invention that allowed only on e man to stop an entire train.
Created by: akennon
Popular U.S. History sets

 

 



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