High Middle Ages

===Poland===
[[File:Polska 960 - 992.svg|thumb|upright=1.2|[[Poland]] under the rule of Duke [[Mieszko I]] between {{Circa|960}} - 992]]
{{main|History of Poland in the Middle Ages|History of Poland during the Piast dynasty}}

In the mid-10th century Poland emerged as a duchy after [[Mieszko I]], the ruler of the [[Western Polans|Polans]], conquered the surrounding [[Lechites|Lechitic tribes]] in the region. Then in 1025 under the rule of [[Bolesław I the Brave]], Poland became a kingdom.