Complex sentence: In 1832 a few Mormon settlers who had been evicted from Jackson County, Missouri moved into the county, including Jacob Haun, whose mill on Shoal Creek would become the scene of the bloodiest battle in the Mormon War, known as the Haun's Mill Massacre.
Split into simpler sentences: In 1832 a few Mormon settlers, who had been evicted from Jackson County, Missouri, moved into the county. These included Jacob Haun, whose mill on Shoal Creek would become the scene of the bloodiest battle in the Mormon War, known as the Haun's Mill Massacre.