Were built around a common is the correct answer I believe.
The Proclamation of 1763<span> was issued October 7, </span>1763, by King George III following Great Britain's win over the French territory in North America after the end of the French and Indian War. which forbade all settlement past a line drawn along the Appalachian Mountains.
It was made so there could be a solid set of laws to keep to protect plebeians from the unfair treatment of the partricians.