Savannah was the most significant port in Georgia, and the Union strategy centered on securing bases at Savannah and the outlying islands to fully blockade Georgia. This was to deny access to private merchants and mercenary ships and help to "strangle" the state.
The correct answer is actually industrious or inferior. That's why when they group up there is often a clear hierarchy among the children as to who will be the leader and who will be the follower in things like various games or sports activities.