Answer:
Option: A. On top of a hill surrounded by swamps
Step-by-step explanation:
Vicksburg played a crucial role in the Civil War in America. Vicksburg is located on the Mississippi River on the top of the hill, which allowed the soldiers to see enemies approaching from far away. Vicksburg was the last significant port on the river held by the South. South supplied arms and ammunition to the West (rebel states) through the port.