O' Sullivan. He was the founder and editor of the United States Magazine and the Democratic Review and publisher of the New York Morning News. Most Americans believed that the superiority of their institutions and white culture gave them the God-given right to spread across the continent. AO' Sullivan is credited with inventing the term "manifest destiny". This term was created to justify white settlers taking the land they wanted. The independence of Texas was complete, therefore he believed that no obligation of duty to Mexico would in the least tend to limit their right to effect the desired recovery of the beautiful provenance once theirs. “It has been freed, justly and absolutely freed, from any Mexican allegiance, or duty of cohesion to the Mexican body politic, by the acts and guilt of Mexico itself, and of Mexico