Khan Academy
Khan Academy: Motivation for European Conquest of the New World
God, gold, and glory motivated European nations to explore and create colonies in the New World. This article discusses the Crusades and how they influenced European colonization projects.
University of Calgary
University of Calgary: The Portuguese Conquest of Brazil
This site provides a brief overview of the conquest of Brazil during approximately 1500 AD. Includes brief but good information about Portuguese imperialism and colonization of Brazil through 1600.