Explanation:
During that time period, medicine was made of plants. As the world and it's native people continued to evolve, more and more about medicines were discovered. The colonists (from civilized countries) and native people exchanged many ideas, knowledge, and materials as they crossed paths. Some of these exchanges happened during the Age of Exploration. For examples, European colonists discovered the Americas. They also came across the Native Americans of that land. The Colonists brought materials and ideas with them, introducing it to the native people. Whereas, the Native Americans did the very same thing. This simple, but complex exchange happens in our every day lives and more medicines will continue to be discovered and created.
Answer:
d
Explanation:
because there is no endless item or resource and will always be renewable
