1020

Asia

 * and the exchange  following a seven-year territorial dispute.

Europe

 * City of founded.
 * Third campaign of.
 * codifies the laws of.
 * ends to be active.

Births

 * (approximate)
 * Empress, regent of the (d. )
 * (d. ), Chinese Neo-Confucian philosopher and cosmologist
 * (d. ), famous Chinese scientist and engineer

Deaths

 * , n (b. )
 * , Icelandic Explorer
 * , Icelandic Explorer