Manifest Destiny

John Gast - "American Progress," (1872)

"...To state the truth at once in its neglected simplicity, we are free to say that were the respective cases and arguments of the two parties, as to all these points of history and law, reversed - had England all ours, and we nothing but hers - our claim to Oregon would still be best and strongest. And that claim is by the right of our manifest destiny to overspread and to possess the whole of the continent which Providence has given us for the development of the great experiment of liberty and federated self-government entrusted to us." 

~  John L. O' Sullivan, "Manifest Destiny" editorial, New York Morning News on December 27, 1845