University of Calgary
Merchants and Traders: Kilwa
The wealthy island city of Kilwa was the most important trade center that flourished along the East African Coast from the 1100s to the early 1500s.
United Nations
United Nations: Cartographic Section: Okavango River Basin [Pdf]
This map from the United Nations is a very detailed map of the Okavango River Basin, showing rivers, wetlands, cities, country boundaries and much more. Increase the viewing percentage to read the map easily.
Other
Utalii Travel & Safari: Kilwa Kisiwani Ancient Ruins
This site provides an extensive description of the ancient city of Kilwa, the oldest city in Eastern Africa.
InterKnowledge Corp.
Inter Knowledge Corp: Zimbabwe
InterKnowledge Corp provides basic facts about the location, geography, climate, history and culture of the country Zimbabwe.
Other
River Systems of the World
Find statistics about the many river systems of the world. Includes facts such as length, drainage area, cities, notable tributaries, and more. Also provides links to sites about some of the rivers.