What natural barrier forms
the western border of the
southern colonies

The Mississippi River.

Explanation:

The Mississippi River is the natural barrier that forms the western border of the Southern colonies.the southern colonies were,Virginia, Maryland, North Carolina, South Carolina and Georgia.

the noble might have thought that the system was far because they had lot of things and riches and the serf would have thought that the feudal system was un fair because of the way they were treated.