| A | B |
| Great Railroad Strike of 1877 | A violent, disorganized strike against the railroad companies; the workers ultimately lost. |
| Depression | Economic condition characterized by a large drop in the GDP and high unemployment. |
| Union | A worker organization that aims to improve working conditions and wages. |
| Strikebreaker/scab | A worker hired to take a striker's job during a strike. |
| Homestead Strike | An unsuccessful strike against Carnegie Steel in 1892. |
| Lockout | A situation in which workers are ordered out of a business factory and the business is shut down. |
| American Federation of Labor | Led by Samuel Gompers; believed in "bread and butter issues," such as higher pay, better working conditions, shorter hours. |
| Andrew Carnegie | Industrialist who established Carnegie Steel. |
| Henry Frick | Manager of the Homestead factory during the 1892 strike. |
| Pinkertons | Private detectives often hired to break strikes; frequently acted more like soldiers than detectives and would often resort to violence. |
| Blacklist | A line of workers not to be hired in an industry. |
| American Railway Union | Led by Eugene Debs; supported the Pullman workers in the 1894 strike and lost. |
| Injunction | AN order from a judge to stop a certain action. |
| Pullman Strike | Workers in the Pullman factories and the American Railway Union were crushed in this 1894 strike. |
| George Pullman | Owner of the Pullman Palace Car Company and the town of Pullman; workers went on strike in 1894 when he cut wages and kept rents the same. |