How did the capture of vicksburg contribute to the union victory in the civil war?

it gave the union control of major southern cities.

it allowed the union to focus on fighting in border states.

it gave the union the ability to supply its troops.

it allowed the union to focus on fighting in the east.

Thomas jefferson was important in the revolutionary era because a) he wrote much of the declaration of independence. b) he was elected the president of the continental congress. c) his philosophies were used in the influential pamphlet common sense. reactivate d) his leadership and moral stand lead to the colonies to fight for the abolition of slavery.