| Term | Definition |
| industrialization | the process by which businesses grow and begin produce products using machinery |
| steel | revolutionary type of metal made of iron, carbon, and sometimes other metals |
| corporation | a business owned by many investors |
| entrepreneur | a person who starts a business |
| trust | a group of corporations that unite to reduce competition and gain the ability to control prices in the industry |
| monopoly | company that controls all aspects of a particular type of product |
| urbanization | the growth of cities |
| tenements | cheap, low quality apartment buildings which usually housed poor factory workers |
| free-enterprise system | economic system that depends on free competition among businesses to guarantee quality and price |
| trade union | groups of people of the same trade that band together to fight for better working conditions and wages |
| collective bargaining | a strategy used by some labor unions where representatives of the union talk to a company to negotiate better conditions for workers |
| Haymarket Riot | a strike by the Knights of Labor when someone through a bomb; employees fire anyone associated with the Knights |
| black lists | lists of suspected union members which employees gave to each other to keep them from being hired |
| Knights of Labor (KOL) | a labor union lead by Uriah Stephens which was notorious for its rallies |
| American Federation of Labor (AFL) | a labor union lead by Samuel Gompers which used collective bargaining |
| Homestead Strike | a violent strike at a Carnegie steel plant where both police and strikers were injured |
| Thomas Edison | famous inventor- light bulb, generator, phonograph, motion picture projector |
| Alexander Graham Bell | inventor- telephone |
| assembly line | system designed by Eli Whitney, more efficient |