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.
Other
China Knowledge: Song Dynasty
Comprehensive article that covers the Song Dynasty. Extremely informative and interesting.
Other
Travel China Guide: Northern Song Dynasty (960 1127)
Brief encyclopedia style article that discusses the history of the Northern Song Dynasty.
University of Maryland
Umd: The Imperial Era Ii the Song Dynasty
This site features a brief article about the foundation of the Song Dynasty.