What were some political, economic, and social reasons for Manifest Destiny? in 3 sentences

Some political reasons for Manifest Destiny include the desire for national unity and expansion of American influence. Economically, there was a belief in the potential of westward expansion to provide new markets and resources, such as gold and land for agriculture. Socially, Manifest Destiny was driven by a sense of American exceptionalism, a belief that the United States had a unique and divinely ordained mission to spread its democratic and capitalist values.