Answer:
suffered losses so heavy that he could no longer mount an effective defense
Explanation:
Battle of Gettysburg is part of the many battles between the Confederates (Army of Northern Virginia) and the Union (Army of Potomac) during the American Civil War, which occurred between July 1 - 3 in 1863. In this battle, General Robert E. Lee suffered losses so heavy ( with total casualties estimated to be in the region of 23,000 - 28,000) that he could no longer mount an effective defense. He later asked to be replaced by the Confederates president Jefferson Davis.
It was xoined by Winston Churchill who described the Berlin wall that seperated east germany from west germany not allowing any citizen in the communist countires to escape and leave their tyrannical overlords for the free west.
Byzantium was chosen as the capital of the Roman Empire for its strategic benefits, central position and excellent harbor.<span> Byzantium also symbolized a break from Constantine's predecessors.</span>
I think it would be option C. John Roebling
Hoped this helped. :)