| A | B |
| Spanish-American War | In 1898; a conflict between the United States and Spain; in which the U.S. supported the Cubans' fight for independence. |
| Philippine-American War | Armed conflict between the Philippines and the United States from 1899-1902. It was a continuation of the Philippine struggle for independence. |
| American Imperialism | The period when America sought to control the political and economic fortunes of weaker nations such as Puerto Rico; Guam; and the Philippines after the Spanish-American War |
| Roosevelt Corollary | 1904 extension of the Monroe Doctrine; stating that the United States has the right to protect its economic interests in South And Central America by using military force |
| Panama Canal | Ship canal cut across the isthmus of Panama by United States; it opened in 1915. Connected the Atlantic and Pacific Oceans making for quicker trading. |
| U.S.S. Maine | U.S. Battleship that exploded in Havana Harbor in 1898; Evidence suggests an internal explosion; however Spanish military was framed by Yellow Journalism; The incident was a catalyst for the Spanish American War |
| Yellow Journalism | Journalism that exploits; distorts; or exaggerates the news to create sensations and attract readers |
| Rough Riders | Volunteer regiment of US Cavalry led by Teddy Roosevelt during the Spanish American War |
| San Juan Hill | Site of the most famous battle of the Spanish-American war; where Theodore Roosevelt successfully leads the Rough Riders in a charge against the Spanish trenches. |
| Guerrilla Warfare | A hit-and-run technique used in fighting a war; fighting by small bands of warriors using tactics such as sudden ambushes. |
| American Anti-Imperialist League | An organization of prominent Americans including Mark Twain; Samuel Gompers and Andrew Carnegie; founded to oppose the occupation of the Philippines after the Spanish American War. |
| Big Stick | Policy developed by Teddy Roosevelt symbolizing his power and readiness to use military force. It was the basis of U.S. imperialistic foreign policy. |