Complex sentence: Turpentine was a common medicine among seamen during the Age of Discovery, and one of several products carried aboard Ferdinand Magellan's fleet in his first circumnavigation of the globe, and is still used today as an alternative medicine.
Split into simpler sentences: Turpentine was a common medicine among seamen during the Age of Discovery. It is one of several products carried aboard Ferdinand Magellan's fleet in his first circumnavigation of the globe, and is still used today as an alternative medicine.