I’m not too sure what your trying to day
Answer:
The British government did not want American colonists crossing the Appalachian Mountains and creating tension with the French and Native Americans there. The solution seemed simple. They issued the Royal Proclamation of 1763, which declared the boundaries of the thirteen colonies as the Appalachian Mountains.
HOPE THIS HELPED!!!!!!!!!!XDDD
Because the Byzantine empire was weakened from other areas which the Barbarians invaded from hope I helped