Why do the Americans want more land?

Americans sought more land in the 19th century primarily driven by the ideology of Manifest Destiny, which held that it was their divine right and duty to expand across the continent. This desire was fueled by economic opportunities, such as agriculture and resource extraction, as well as the pursuit of new markets. Additionally, land acquisition was seen as a means to spread democracy and American culture. The quest for more territory often led to conflicts with Indigenous peoples and other nations.