The question of what countries did the US colonize requires a nuanced look beyond simple declarations of independence. While the United States did not pursue a traditional model of colonial empire seen in Europe, its history is defined by territorial expansion, the establishment of control over foreign populations, and the strategic acquisition of land that fundamentally reshaped the geopolitical map. This expansion often involved direct governance, the displacement of indigenous peoples, and the assertion of economic and military dominance that mirrors classic colonial objectives, even if the terminology differs.
The Domestic Frontier: Westward Expansion and Indigenous Lands
For most Americans, the most direct experience of colonization is found in the history of westward expansion. The process of settling the North American continent involved the systematic displacement and subjugation of numerous Indigenous nations. The United States government enacted policies that treated these sovereign nations as obstacles to be removed or assimilated. This was not merely migration; it was a calculated expansion of control over territory and resources, achieved through treaties that were often broken, military campaigns, and the forced relocation of entire peoples.
The Louisiana Purchase and Manifest Destiny
The Louisiana Purchase in 1803 doubled the size of the United States, acquiring a vast territory from France that was already inhabited by diverse Indigenous tribes and European settlers. This event, followed by the ideology of Manifest Destiny, framed the expansion across the continent as a divine right and national mission. The subsequent settlement of the Great Plains, the Southwest, and the Pacific Northwest involved the direct administration and integration of these new lands into the United States, effectively colonizing spaces that were not originally part of the thirteen colonies.
Puerto Rico, Guam, and the Philippines: The Colonial Turning Point
The Spanish-American War in 1898 marked a definitive shift in American foreign policy, transforming the nation into a global power with formal overseas colonies. Instead of granting independence to the territories it helped liberate from Spain, the United States asserted control over key strategic locations. This period established a model of colonial governance that persists in modified forms to this day.
Puerto Rico remains a U.S. territory, granting its people U.S. citizenship but denying them full representation in Congress and the right to vote in presidential elections.
Guam and the Northern Mariana Islands are unincorporated territories in the western Pacific, hosting critical U.S. military bases while their residents hold U.S. citizenship without voting representation.
The Philippines became a colony following the U.S. victory over Spain, leading to a brutal three-year war of independence against American forces. The U.S. administered the islands until granting independence in 1946, deeply influencing the nation's language, legal system, and governmental structure.
American Samoa and the Strategic Pacific
American Samoa, acquired through a series of agreements starting in the late 19th century, is an unincorporated U.S. territory in the South Pacific. Unlike Puerto Rico, its residents are U.S. nationals, not citizens, and they cannot vote in federal elections. The United States maintains a strategic military presence there, demonstrating how colonial holdings continue to serve as vital geopolitical assets in maintaining global influence and securing trade routes.
The Virgin Islands and Military Bases
The United States purchased the Danish West Indies from Denmark in 1917, renaming them the U.S. Virgin Islands. This acquisition was driven by strategic military concerns, particularly the need for a naval base in the Caribbean during World War I. Today, the islands remain a U.S. territory, representing a colonial acquisition driven by military and economic interests rather than large-scale settler populations.
