As president Andrew Jackson sent them away, leading to the trail of tears to gain the land. they were better off in Indian territory because the land was then his to control.
Napoleon replaced existing Monarchs with members of his own family. His aim was to replace existing empire with one of his, which would have made him and his family rule wholly. Resistance to to French occupation and French puppet rulers was often based on nationalist sentiments, but it's doubtful whether it would have remained a popular cause with the masses after Napoleon's final defeat.
It was set at the Mississippi river, hope this helps