Complex sentence: Claiborne Fox Jackson (April 4,1806--December 6,1862) was a lawyer, soldier, politician, and Governor of Missouri in 1861, then governor-in-exile for the Confederacy during the American Civil War.
Split into simpler sentences: Claiborne Fox Jackson (April 4,1806--December 6,1862) was a lawyer, soldier, politician. He was Governor of Missouri in 1861, then governor-in-exile for the Confederacy during the American Civil War.