What was an argument used by john l. O'Sullivan to explain of mainifest destiny?

John L. O'Sullivan, a journalist and advocate for Manifest Destiny, argued that it was the United States' divine right and duty to expand across the North American continent. He believed that American democracy and culture were superior and that spreading these ideals would benefit not only the nation but also the territories being annexed. O'Sullivan viewed expansion as a means of fulfilling a historical mission and promoting progress, freedom, and prosperity. His rhetoric emphasized a sense of inevitability and moral obligation in the pursuit of territorial expansion.