Complex sentence: At the southwestern edge of the confluence of the Appomattox and James Rivers opposite City Point, Bermuda Hundred was a port town for many years, and was part of the Bermuda Hundred Campaign during the American Civil War (1861-1865).
Split into simpler sentences: At the southwestern edge of the confluence of the Appomattox and James Rivers opposite City Point, Bermuda Hundred was a port town for many years. The area of the peninsula between the James and Appomattox rivers on which Bermuda Hundred is located was part of the Bermuda Hundred Campaign during the American Civil War (1861-1865).