who was the person who made the manifest destiny
The Manifest Destiny was an idea made popular in the 1800's by John Louis O'Sullivan that the United States must expand its boundaries to the Pacific Ocean.  Answer: The i â¦ dea that the United States must expand westward.anifest Destiny was a belief in the 1830s and 1840s that the  divine right of the US was to expand westward toward the Pacific  Ocean and conquer the entire continent (un â¦ occupied except by the  native tribes).