Complex sentence: The 1860 U.S. Census included a total of 7,244 slaves held in Issaquena County, and of 115 slave owners, 39 held 77 or more slaves.
Split into simpler sentences: The 1860 U.S. Census included a total of 7,244 slaves held in Issaquena County. Of 115 slave owners, 39 held 77 or more slaves.