Lee hoped a confederate victory at gettysburg would
a. provide the south with european allies.
b. prevent the fall of vicksburg.
c. allow the south to set the terms of peace.
d. provide valuable resources for trade.

A. provide the South with European allies

It was in Lee's expectation that a Confederate victory at Gettysburg would actually earn the South with new allies specifically the European ones. He thought that having such powerful allies is advantageous to their side giving them a bigger chance.