Columnist John L. Sullivan explained in his "Manifest Destiny" essay that the United States' mission was to spread "the great experiment of liberty" - or republican democracy - all across North America.
He sought this move as a strategy to disregard Great Britain's claims to the territory of the state of Oregon. According to the writer's believes, manifest destiny was a higher law that was above all international laws and pacts, one that could allow the country to reach new highs and become extraordinary. .
Therefore, the answer is option C) is meant to expand across the continent and become extraordinary.