| A | B |
| Sphere of Influence | An area, usually around a seaport, where a nation had special trading privileges |
| Rough Riders | A group of volunteer soldiers that Teddy Roosevelt led during the Spanish American War in Cuba |
| Dollar Diplomacy | Using money and investors instead of military might to expand American influence in Latin America |
| Open Door Policy | A policy where any nation could trade in another nation's sphere of influence |
| "Remember the Maine" | An American warship that was sunk off the coast of Cuba in which most of the crew died and later became a rally cry for going to war with Spain |
| The Roosevelt Corollary | An addition to the Monroe Doctrune in 1904 in which the US claimed the right to intervene in Latin America to preserve law and order |