Colonialism: Colonialism is when a country establishes settlements or forms political control over another region for economic exploitation or political dominance.
Manifest Destiny: Manifest Destiny was the belief in the 19th-century United States that it was destined to expand its territory across North America from coast to coast.
Sphere of Influence: A sphere of influence refers to an area where one nation has considerable political, economic, or military influence without formal territorial control.