USA HISTORY

Detailed explanation-1: -With its triumph in the Mexican-American War, the United States seemingly realized its Manifest Destiny by gaining an immense domain (more than 525, 000 square miles [1, 360, 000 square km] of land), including present-day Arizona, California, western Colorado, Nevada, New Mexico, Texas, and Utah.

Detailed explanation-2: -In the mid-nineteenth century, newspaper editor John O’Sullivan coined the term ‘manifest destiny’ to describe the belief that God intended for the United States to occupy North America from Atlantic to Pacific.

Detailed explanation-3: -Meanwhile, Americans in the 1830s and 1840s justified their march across the continent under the rubric of “Manifest Destiny.” Coined by a New York newspaper, the term described the popular desire for geographic expansion and, as such, was more a zeitgeist than an official foreign policy strategy in antebellum America.

Detailed explanation-4: -Manifest Destiny: the nineteenth-century doctrine or belief that the expansion of the U.S. throughout the American continents was both justified and inevitable.