1. What does the term 'Columbian Exchange' specifically refer to?
The exchange of previously unknown plants, animals, people, and diseases between Europe and the New World
Explication
The source defines the Columbian Exchange as the exchange of previously unknown plants, animals, people, and diseases between Europe and the New World, which matches the first option exactly. Review: Columbian Exchange and demographic impact on Native Americans. Course evidence: "- **Columbian Exchange** : The exchange of previously unknown plants, animals, people, and diseases between Europe and the New World."