Complex sentence: With the food supply at Boonesborough running low, the settlers needed salt to preserve what meat they had, and so in January 1778 Daniel Boone led a party of thirty men to the salt springs on the Licking River.
Split into simpler sentences: With the food supply at Boonesborough running low, the settlers needed salt to preserve what meat they had. In January 1778, Daniel Boone led a party of thirty men to the salt springs on the Licking River.