Complex sentence: The invisible Institution "in the Antebellum South" (1979) Subject to the slave societies of the South, they had to belong to white Baptist associations and were subject to white supervision by law, especially after the slave rebellion of Nat Turner in 1831.
Split into simpler sentences: The invisible Institution "in the Antebellum South" (1979) Under the slave societies of the South, they had to belong to white Baptist associations. Black congregations were required by law to have white ministers and supervision by law, especially after the slave rebellion of Nat Turner in 1831.