One economic motivation behind the European imperialism of the 19th century was obtaining raw materials. They also gained markets for manufactured products. The colonized people equaled slaves and low wage labor.
<span>Louisiana Purchase. The Louisiana Purchase (1803) was a land deal between the United States and France, in which the U.S. acquired </span>approximately 827,000 square miles<span> of land west of the Mississippi River for $15 million.</span>
<span>Pinckney Treaty hope this helps u :P </span>
It provided legitimacy to the person's rule.