Totalitarian government is very controlling
They appreciated him because he fought in world war if im correct.
I think it was the past with Britain where only one person had complete power. This did not allow people to have a say, which was the reasons why the 13 colonies rebelled. Including the right of the people to revolt against a tyrannical government would protect the fundament of the united states government which was to give the people power and to make sure the US would not become something similar to Britain.
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)