What belief refers to the idea that the United States was destined to control territory between the two oceans?

The belief that refers to the idea that the United States was destined to control territory between the two oceans is known as Manifest Destiny. This concept emerged in the 19th century, particularly during the 1840s, and reflected a widespread belief among Americans that it was their divine right and obligation to expand westward across North America. Advocates of Manifest Destiny viewed this expansion as a means of spreading democracy and civilization, often justifying their actions regardless of the impact on Native American populations and other nations. This belief not only fueled territorial acquisitions such as the Louisiana Purchase and the annexation of Texas but also encouraged conflict and negotiation with various groups, highlighting a pivotal aspect of American history and identity.

Imperialism generally refers to the policy of extending a country's power and influence through colonization, military force, or other means, while expansionism is a broader term that encompasses the movement to acquire more territory but does not carry the specific ideological implications of destiny. Colonialism involves the control of foreign peoples and territories, often leading to the exploitation of resources and cultures. Thus, Manifest Destiny specifically encapsulates the idea of a profound, almost ordained mission to expand across the continent, distinguishing it from other related concepts.