| Term | Definition |
| Captain of Industry | Businessmen that created jobs, increased production, and donated their money to charities |
| Robber Barrons | Businessmen that used ruthless tactics against their competition. They also cut worker wages for higher profits |
| John D Rockefeller | He controlled oil refining in America |
| Andrew Carnegie | He controlled steel production in America |
| JP Morgan | Famous banker that invested in electricity and railroads |
| Thomas Edison | He created the electric light bulb and DC current |
| Cornelius Vanderbilt | He controlled railroads in America |
| Monopoly | Total control of an industry by a single person or company. |
| Nativism | Anger and hatred towards immigrants. |
| Chinese Exclusion Act | Limited the number of Chinese immigrants allowed in the US. |
| Labor Union | Organization of workers that fought for higher pay, shorter workdays and better working conditions |
| Gilded Age | Term that describes the gap from the very wealthy to the very poor in America |
| Strike | When workers stop working |
| Collective Bargaining | When workers and owners negotiate terms of contracts together |
| Ellis Island | Landing site by New York for Immigrants from Europe |
| Angel Island | Landing site by San Francisco for Immigrants from Asia. |
| Assimilate | When Immigrants adopt the culture of their new home country |
