Leszek II the Black, King (Kingdom of Poland) : All Data
Leszek II the Black was the King of the Kingdom of Poland from 1279 to 1288. During his reign, he faced several significant conflicts, including the War of the Dukes in 1288, which was a power struggle between Leszek II and his uncle Bolesław II the Bald. Additionally, Leszek II was involved in the Mongol invasion of Poland in 1287, where he successfully defended his kingdom against the Mongol forces. These wars and revolts align with the known timespan of Leszek II's rule, making him a resilient and strategic ruler who defended his kingdom against external threats and internal power struggles.






























