| A | B |
| John Rockefeller | The shrewd business owner of Standard Oil |
| J.P. Morgan | An investment banker who controlled many corporations |
| Andrew Carnegie | The steel king who gave millions to charities |
| Industry | The growth of this made the U.S. wealthy |
| Railroads | Moved goods/people cheaply; connected the U.S. |
| Gauges | the width of a track, at first they were different! |
| consolidation | Larger companies bought out smaller companies (and combined them) |
| Cornelius Vanderbilt | The ruthless king of the Railroad |
| rebates | giving discounts to wealthy customers |
| pool | dividing up businesses to "fix" prices |
| price fixing | agreeing with competitors on high prices |