"Manifest Destiny" was a popular concept for the Jacksonian Democrats who wanted to annex much of what is now the Western United States.
I also hope, though I realize how unlikely it is, that somewhere down the line, when the triumphalism of you and your peers—the unrestrained Manifest Destiny of it all—goes too far and collapses into itself, that you’ll regain your sense of perspective, and your humanity.
Dave Eggers -- The Circle
That period of conquest (1829-48) was fired by the idea that it was America’s Manifest Destiny to control the continent, and it increased U.S. territory by one-third.
Robert MacNeil and William Crane -- Do You Speak American?
…it surely is to be found, found abundantly, in the manner in which other nations have undertaken to intrude themselves into it, between us and the proper parties to the case, in a spirit of hostile interference against us, for the avowed object of thwarting our policy and hampering our power, limiting our greatness and checking the fulfillment of our manifest destiny to overspread the continent allotted by Providence for the free development of our yearly multiplying millions.
John O’Sullivan -- Annexation (Texas)
Ishmael knew his father had come to logging with a romantic’s sense of grandeur, viewing it at first as grandly heroic, in keeping with the spirit of manifest destiny.
David Guterson -- Snow Falling on Cedars
Convinced that the treaty was a plot hatched by Calhoun without consideration of Mexican rights or resistance, and for political, slavery and secessionist purposes, Benton—who actually favored Western expansion on the nationalistic grounds of "manifest destiny"—was handing his political enemies a choice opportunity to assail him openly.
John F. Kennedy -- Profiles in Courage
"Perhaps," said John, as he settled himself on the train, "perhaps I am to blame myself in struggling against my manifest destiny simply because it looks hard and unpleasant.