Answer:
During the American Civil War, the Battle of Petersburg started in 1864 lasted almost 1 year until April 1865, the Confederates were determined to keep, their Capital City, Richmond, which was vital for them to continue with the war, due the strategic railroad hub, the industries covered by that town and their military installation located there, so they needed to prevent the Union to take over the railways and their round-up of assets.
Step-by-step explanation: