The Confederacy had a victory at the Battle of Chickamauga which pushed the Union Army back into Tennessee. However, this gave the Union an opportunity to prepare a surprise attack to capture ________, which was the railroad hub of the Confederacy.

A. Savannah
B. Milledgeville
C. Augusta
D. Atlanta.

D. Atlanta

are you sure?

Yes, I am certain that the correct answer is D. Atlanta. After the Battle of Chickamauga, the Union Army, led by General William T. Sherman, launched the Atlanta Campaign which ultimately led to the capture of Atlanta.