Complex sentence: In 1788, Solomon, along his son Tandy, explored the Southern Appalachian region and established one of the first settlments in what is now Eastern Kentucky, and in 1797 helped to establish the city of Prestonsburg, Kentucky.
Split into simpler sentences: In 1788, Solomon, along his son Tandy, explored the Southern Appalachian region and established one of the first settlments in what is now Eastern Kentucky. In 1797 helped to establish the city of Prestonsburg, Kentucky.