To not try and settle or trade in the Americas without officials consent.<span />
That is for sure right I believe.
American federalism is the constitutional relationship between U.S. state governments and the Federal government of the United States. Since the founding of the country, and particularly with the end of the American Civil War, power shifted away from the states and towards the national government.
It was B. Eric the Red who was the Viking explorer who sailed west from Iceland and set up a colony on a large land mass that he called Greenland.
