The goal was to tell the rest of the world (mainly the Europeans) that the United States has official borders and that they could no longer colonize in the borders.
It also told the Europeans that the U.S would not interfere with their colonies or Europe itself.
The encomienda system was a labor system instituted by the Spanish Crown in the American colonies.
Laws were state and local to enforce racial segregation in the Southern United States.
France blamed germane for WW1