This brief video provides an overview of Columbus and his impact on the "New World." (The materials in this site are copyright 2016 W. W. Norton and Company, Inc., unless otherwise stated. All rights reserved.
Studying the production and consumption of food allows historians to uncover hidden levels of meaning in social relationships, understand demographic shifts. The Columbian Exchange revolutionized diets around the world. In addition to the articles and information, there is a 30-minute video that you can access and view on the lower left side pf the page.
This map was created at the University of Texas. You might find it useful.
This website created by Prof. Timothy Shannon at Gettysburg College in Pennsylvania offers a lot of good information on the various aspects of the Columbian Exchange, which refers to a period of cultural and biological exchanges between the New and Old Worlds. Exchanges of plants, animals, diseases and technology transformed European and Native American societies and cultures.
In this magazine article by Megan Gambino from 2011, the historian discusses the ecological impact of Columbus’ landing in 1492 on both the Old World and the New World.
This brief essay by Alfred Crosby (the historian who originally coined the term "Columbian Exchange" contains a lot of useful information. You may also find other items of interest at this National Humanities Center website.