Editing 840 (section)

==== Asia ====
* Emperor [[Emperor Wenzong of Tang|Wenzong]] (Li Ang) dies after a 13-year reign, in which he has failed to break the power of his palace [[eunuch]]s. He is succeeded by his brother [[Emperor Wuzong of Tang|Wu Zong]], as Chinese ruler of the [[Tang dynasty]].
* The [[Yenisei Kirghiz]] settle along the [[Yenisei River]], and sack with a force of around 80,000 horsemen the Uyghur capital, [[Ordu-Baliq]] (driving the [[Uyghurs]] out of [[Mongolia]]). This ends  the [[Uyghur Khaganate]].<ref name="ca">[http://www.britannica.com/EBchecked/topic/102315/history-of-Central-Asia/73536/Reunification#73538 History of Central Asia].</ref>
*The [[840 Erzurum earthquake]] takes place in the city of Qaliqala (modern [[Erzurum]]).<ref name="Guidoboni">Guidoboni, Traina, 1995, p. 121</ref>