Explain what a buffer colonyb is

A buffer colony - like Georgia, for example - was founded because colonists wanted a "buffer zone" (any area that serves the purpose of keeping two or more other areas distant from one another.) between the British colonies and other settlements. Georgia, specifically, was founded to protect South Carolina against attack by the Spanish, the French and the Indians.  

Explanation:

in an absolute  monarchy, the  monarchrules as an autocrat, with absolutepower  over the state and government — for example, the right to rule by decree, promulgate laws, and impose punishments. the  monarch isnominally sovereign but the electorate, through their legislature, exercise political sovereignty.