http://countrystudies.us/brazil/58.htm - This article comes from the U.S. Library of Congress. It provides information about the gold rush in Brazil, the impact of the initial boom, and the following stagnation after the natural resources were essentially depleted.
http://clements.umich.edu/exhibits/online/sugarexhibit/sugar06.php - Feature from the University of Michigan explaining sugar production in the Caribbean islands. It discusses the slaves brought over to maintain production and provides primary sources to discuss the topic.
https://www.youtube.com/watch?v=laLeYn3A02Y – This Al-Jazeera video is about the release of records regarding the Dutch-held slaves of Suriname. It gives a brief history of the topic and explains why the release of the records is significant and how people feel about it in contemporary times.
https://www.youtube.com/watch?v=jZnJLEyJtBU – Khan Academy explores the foundations of tobacco farming in Jamestown and the Chesapeake Bay area. In doing so, it discusses the beginnings of slavery as well as the various conflicts of the early settlers.