Complex sentence: Shortly after the conclusion of the Camp Hill Battle, Confederate general Braxton Bragg completes the conquest of Kentucky; sometime after the U.S. agreed to mediation, Kentucky becomes the twelfth state to enter the Confederacy.
Split into simpler sentences: Shortly after the conclusion of the Camp Hill Battle, Confederate general Braxton Bragg completes the conquest of Kentucky. Sometime after the U.S. agreed to mediation, Kentucky becomes the twelfth state to enter the Confederacy.