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| | United States - Psychology Central |
 | | The United States' total area is 3,718,711 square miles (9,631,418 km²), of which land makes up 3,537,438 square miles (9,161,923 km²) and water makes up 181,273 square miles (469,495 km²). |
 | | Manifest Destiny was a philosophy that encouraged westward expansion in the United States: as the population of the Eastern states grew and as a steady increase of immigrants entered the country, settlers moved steadily westward across North America. |
 | | The United States is sometimes critized for interventionist policies in Latin America during the nineteenth and twentieth centuries, and occasional aid (financial, military and otherwise) given to repressive governments and warlords during the Cold War against the Soviet Union. |
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