Manifest Destiny
But there was also something deeper in the president's message, something most of his critics missed--an implied allusion to the “idea” of “manifest destiny”--an idea Trump embodies--and he was not the first.
This quintessential American idea envisions a future in which the US stretches across the entire North American continent--including Canada.
The notion is essentially grounded in God, a sense of American exceptionalism and its entrepreneurial spirit, implying the ineluctable spread of the republican form of governance.
This expansion was seen to reach its peak under President James K. Polk’s administration, who famously declared that it is “the fulfilment of our manifest destiny to overspread the continent allotted by Providence for the free development of our yearly multiplying millions.”
In 1844, James K. Polk, an unknown but shrewd strategist from Tennessee, ran for president. He tapped into the public mood and realized that “Manifest Destiny” was in the hearts of many Americans. Polk called for expansion that included Texas, California, and the entire Oregon Territory--an area spanning the modern states of Oregon, Idaho, Washington, and western Canada. Both Britain and America claimed the territory.
Polk, an ardent proponent of Manifest Destiny, had won election with the slogan “54˚ 40’ or fight!” (a reference to the potential northern boundary of Oregon as latitude 54˚ 40’) and called U.S. claims to Oregon “clear and unquestionable” in his inaugural address.
Although Polk blustered about obtaining the entire territory from Britain, he was privately willing to compromise. Polk boldly declared to Great Britain that joint occupation would end within one year. The British were cautious about another conflict in North America, and by 1846 they proposed splitting Oregon at the 49th parallel. Polk agreed to the compromise--the conflict was avoided. America became a transcontinental nation and a force with which to reckon.