1019 - Cnut the great became king of Denmark

Cnut the great was crowned king

Denmark
Cnut the great arrived in Denmark, to inherit the throne from his brother Harald 2.
Harthacnut was born.
Italy
The Fortress of Troia finished, and a group of Norman soldiers were hire to defend the castle
Russia
Sviatopolk , prince of Kiev died and Yaroslav the Wise became the new prince. 
Sweden
A treaty between Sweden and Norway was arranged at Kungälv.