| A | B |
| Monopoly | A company that completely controls the market of a certain industry. |
| Trust | A group of corporations run by a single board of directors. |
| Tariff | A tax on foreign goods brought into the country. |
| Muckraker | A person who reported on corrupt politicians and other problems of the cities. |
| Conservation | The protection of natural resources. |
| Suffrage | The right to vote. |
| 19th Amendment | Granted women's suffrage or right to vote. |
| 18th Amendment | Prohibition making alcohol illegal |
| Jane Addams | Settlement House/Hull House |
| How the Other Half Livees | Jacob Riis |
| Photographer exposing tenement life | Jacob Riis |
| Author brought down Standard Oil | Ida Tarbell |
| Muckraker for meat packing industry | Upton Sinclair |
| The Jungle | Upton Sinclair |
| Cartoonist who brought down Boss Tweed | Thomas Nast |
| Head of Tammany Hall | Boss Tweed |
| The Conservation President | Teddy Roosevelt |
| The "trustbuster" president | Teddy Roosevelt |
| Broke up monopolies | Sherman Anti-Trust Act |
| Powerful organizations linked to political parties that used legal and illegal methods to get candidates elected. | Political Machines |