Complex sentence: Roswell King, a white overseer on the nearby Pierce Butler plantation, wrote one of the only contemporary accounts of the incident which states that as soon as the Igbo landed on St. Simons Island they took to the swamp, committing suicide by walking into Dunbar Creek.
Split into simpler sentences: Roswell King, a white overseer on the nearby Pierce Butler plantation, wrote one of the only contemporary accounts of the incident. He states that as soon as the Igbo landed on St. Simons Island, they took to the swamp, committing suicide by walking into Dunbar Creek.