Complex sentence: In 1779, the Comanches began raiding the new settlement, and the former Los Adaes settlers chose to move further east to the old mission of Nacogdoches, where they founded the town of the same name.
Split into simpler sentences: In 1779, the Comanches began raiding the new settlement. The former Los Adaes settlers chose to move farther east to the old mission of Nacogdoches, where they founded the town of the same name.