Written identification for the Columbian exchange

The Columbian Exchange

The term is used to describe the enormous widespread exchange of plants, animals, foods, human populations (including slaves), diseases, and ideas between the Eastern and Western hemispheres that occurred after 1492.

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)

because its important to learn about other countries and how high tech they are compared to us. also its good to learn about other cultures and how ours differs and in common also we need to learn about companies that we still buy since they ship it here.