Slash and burn agriculture is most often practiced in places where open land for farming is not readily available because of dense vegetation
That they want to expand building westward, like they did during the purchase. They also wanted to control as much land as they can to explore out west. The Louisana Purchase gave the American explorers new opportunites, doubling the size of the U.S. and from there, they continued to move out west. The Lousiana Purchase in general, partially started the Manifest Destiny. (pardon my grammar)
69 bug boy 45:)))))))))))))$))
