- The other economic engine was Baghdad, capital of the Abbasid dynasty from 762 onward.
- In 1258, the Abbasid dynasty was invaded by the Mongols under Hulagu Khan, the grandson of Genghis Khan.
- Poetry Comparison between Umayyad DYNASTY and the Earlier Stage of Abbasid DYNASTY
- intertribal feuding and the failure of financial reforms eventually led to their unseating by the Abbasid dynasty.
- The Qing Dynasty ceded Hong Kong to Britain.