| A | B |
| isolationism | a national policy of avoiding involvement in world affairs |
| expansionism | a policy that calls for expanding a nation's boundaries |
| imperialism | the actions used by one nation to exercise political or economic control over smaller or weaker nations |
| provisional government | temporary government |
| spheres of influence | sections of a country where one foreign nation enjoys special rights and powers |
| yellow journalism | a type of sensational, biased, and often false reporting |
| armistice | a temporary peace agreement to end fighting |
| protectorate | a country that is technically independent, but is actually under the control of another country |
| territory | an area that is completely controlled by another country as a colonial possession |
| isthmus | a narrow strip of land connecting two larger land areas |
| anarchy | disorder and lawlessness |
| dollar diplomacy | a policy of joining the business interests of a country with its diplomatic interests abroad |
| Matthew Perry | steamed into Tokyo Bay with four warships and asked the Japanese to open their ports to U.S. ships |
| William H. Seward | Secretary of State appointed by Abraham Lincoln |
| Pan-American Union | promoted cooperation among member nations |
| Liliuokalani | the Hawaiian Queen |
| John Hay | Secretary of State |
| Open Door Policy | gave each foreign nation in China rights to trade freely in the other nations spheres of influence |
| Russo-Japanese War | Japan and Russia clashed over Manchuria, a Chinese province rich in natural resources |
| Treaty of Portsmouth | recognized Japan's control of Korea in return for Japan's pledge to halt expansion |
| Rough Riders | an assorted group of former cowhands and college students |
| Battle of San Juan Hill | captured by Americans after intense fighting in Cuba |
| Platt Amendment | gave the U.S. control of a naval base at Guantanamo Bay Cuba |
| Roosevelt Corollary | asserted America's right to act as a "policeman" in Latin America |
| Francisco Pancho Villa | rebel leader in Mexico |
| John J. Pershing | crossed the border into Mexico and pursued Villa for almost a year |
| communication | process of exchanging information |
| vision | an imagined plan |
| consult | to seek opinions or information from |
| exploit | to make use of meanly or unjustly for one's own advantage |
| trigger | to start |
| eventual | occurring later |
| eliminate | to remove; to eradicate; to end |
| annual | yearly |