Original sentence: These conventions and institutions molded an extremely stable and rigidly-structured society in New England, a stark contrast with the unstable and loosely-bound society of the early British colonies in the Chesapeake Bay region, such as Jamestown
Edited sentence: These conventions and institutions molded an extremely stable and well-structured society in New England, a stark contrast with the unstable and loosely-bound society of the early British colonies in the Chesapeake Bay region, such as Jamestown