Library of Congress
Loc: The Cultures and Histories of the Americas
An online exhibit of a vast array of documents, artifacts, and maps detailing cultures in the Americas including the indigenous groups as well as Europeans after contact. From the Library of Congress.
Digital History
Digital History: European Commercial and Financial Expansion
An interesting look at the support for Portuguese exploration by the bankers of Germany and Italy. See how Christopher Columbus' desires for riches was stoked by Portuguese trading posts in the Atlantic.