| A | B |
| Roosevelt Corollary | Made the US the "policemen" of Latin America. |
| Great White Fleet | Ships that Roosevelt sent on a world tour to show America's power. |
| Jingoism | aggressive nationalism |
| Open Door Policy | Idea that all countries should have free reign to trade in China. |
| John Hay | Secretary of State who proposed the Open Door policy. |
| Boxer Rebellion | A rebellion against foreign influence in China. |
| Treaty of Paris | Treaty that gave US the rights to the Philippines, Guam, and Puerto Rico. |
| Rough Riders | A group of cowboys, miners, and law officers who fought in the Spanish-American War and became heroes. |
| Enrique Dupuy de Lome | Spanish Ambassador who angered Americans by criticizing President McKinley. |
| Teddy Roosevelt | Was a member of the Rough Riders, War hero and President. The man who said "speak softly but carry a big stick." |
| Pan-Americanism | The idea that the US and Latin America should work together. |
| Alfred T Mahan | Argued that the US needed a strong Navy in order to be a superpower. |
| Emilio Aguinaldo | Leader of the Filipino revolutionaries who got involved in conflicts with Spain and the US. |
| Dollar Diplomacy | Taft's idea that the US needed to protect its business and investments abroad |
| Protectorate | country that is technically independent but still under the control of another country |
| Platt Amendment | Cuba signed this which gave the United States the right to intervene at any time. |
| Imperialism | The economic, social, military and/or political domination of a strong nation over a weak nation. |
| Yellow Journalism | Sensationalist journalism often filled with exaggeration and some lies. |
| USS Maine | Battleship that sunk under mysterious conditions. |
| William Randolph Hearst | He competed with Joseph Pulitzer and helps to create the Spanish American War. |
| Queen Liliuokalani | Ruler of Hawaii who tried to get Americans out of her country. |
| Cuba | American businessman had sugar plantations in this country. |