Manifest Destiny: Offered a moral justification for American Expansion, a prescription for what an enlarged United States could and should be. At its worst it was cluster of flimsy rationalizations for naked greed and imperial ambition.
“the belief that America had a God-given right, or destiny, to expand the country's borders from 'sea to shining sea'. . “
People moved West for various reasons; for adventure, new land, search for wealth, new life/starting over, and many other reasons. The Federal government encouraged this because new territories could be added to the US. This was called Manifest Destiny, the belief that Americans were entitled and ordained by God to occupy all of North America. If disputed areas in the West such as places like Texas, Oregon and New Mexico territories could be settled and have a majority of Americans there, then these places could and would become US property by default. The Industrial Revolution just added to this push West by the influx of immigrants to America thus many people moved West to get away from this influx. Trades and trappers were the pathfinders of empire, and an unguarded boundary was no barrier to their enterin sparsely peopled and scarcely governed Mexican borderlands.
Manifest Destiny was a concept which heavily influenced American policy in the 1800s. The idea was the driving force behind the rapid expansion of America into the West from the East, and it was heavily promoted in newspapers, posters, and through other mediums. While Manifest Destiny was not itself an official government policy, it led to the passage of legislation such as the Homestead Act, which encouraged Westward colonization and territorial acquisition. It also played an important role in American thought.
The term was first used in 1845 by John O'Sullivan, an American newspaper editor who was writing about the proposed annexation of Texas. O'Sullivan stated that it was America's