| A | B |
| Imperialism | Policy by which stronger nations take control of weaker territories. |
| William Seward | Secretary of State who arranged the purchase of Alaska. |
| Queen Liliuokalani | First queen of the Hawaiian Islands. |
| Yellow journalism | Style of reporting that exaggerated events. |
| U.S.S. Maine | U.S. warship that exploded and sank in Havanna’s harbor. |
| Spanish-American War | War between United States and Spain over the issue of Cuban independence. |
| Rough Riders | Fighting force in Cuba led by Theodore Roosevelt |
| Platt Amendment | Doctrine that gave the United States the right to intervene in Cuba. |
| Anti-Imperialist League | Group of Americans who opposed U.S. imperialism. |
| Luis Munoz Rivera | Puerto Rican leader who fought for independence for Puerto Rico. |
| sphere of influence | Areas where foreign nations claimed special rights and economic privileges. |
| Open Door Policy | U.S. policy designed to prevent other countries from controlling trade with China. |
| Boxer Rebellion | Uprising by Chinese group against foreigners. |
| Panama Canal | U.S. built route through Panama connecting the Atlantic and Pacific Oceans. |
| Roosevelt Corollary | U.S. policy that permitted U.S. intervention in Latin America when it was necessary to maintain stability in the region. |