| A | B |
| Credit Mobilier | railroad company that overcharged the government |
| political machine | support group of political parties |
| political boss | ensures that party members are elected |
| William Marcy Tweed | Ran Tammany Hall - NYC's Democratic political machine |
| laissez-faire | no government involvement in business |
| Promontory Point | Completion point of transcontinental railroad |
| George Pullman | Invented the sleeping rail car |
| George Westinghouse | Invented the air brake for trains |
| Sam Morse | Invented the telegraph and code |
| Alexander Bell | Invented the phone and started AT&T |
| assembly line | Allows companies to make products faster and cheaper |
| capital | money used for investment |
| stock | a share of a business |
| corporation | a business owned by shareholders |
| JP Morgan | A leading US banker |
| United States Steel | The first billion dollar business |