Complex sentence: He introduced the potato plant, and the flax, which quickly became popular; he made sure that stones were removed from fields; he organized maps of the areas, opened pharmacies, and many other things to help the inhabitants.
Split into simpler sentences: He introduced the potato plant, and the flax, which quickly became popular. He made sure that stones were removed from fields, he organized maps of the areas, opened pharmacies, and many other things that helped the inhabitants.