The Bohemian forces were led by King Ottokar II Přemysl , while the Hungarians were led by King Béla IV .

When Ottokar followed Removing his father as King of Bohemia in 1253 , Béla , distrustful of his rising Cause_change_of_position_on_a_scale power , claimed Statement the Styrian duchy .

The quarrels Quarreling were at first settled Resolve_problem with the aid Assistance of Pope Innocent IV in 1254 , when Béla received Receiving large parts of Styria and later installed Change_of_leadership his son Stephen as a duke .

Béla allied Collaboration with Daniel of Galicia and Bolesław V the Chaste of Poland and marched Self_motion against Ottokar .

As they pulled Self_motion back , Béla 's son Stephen started Process_start an attack Attack , went Motion over the Morava and reached Arriving the retiring Bohemian cavalry at the village of Kressenbrunn .

The returning Arriving Bohemian forces routed Béla 's troops , many of which on the run Escaping drowned Death in the river .

After Ottokar 's victory Earnings_and_losses King Béla renounced Surrendering the Duchy of Styria and in 1261 even arranged Arranging the marriage Forming_relationships of his granddaughter Kunigunda of Slavonia with the Bohemian king .

Isaac II Angelus , in order to raise Earnings_and_losses money for his wedding Forming_relationships with the daughter of King Béla III of Hungary , levied Imposing_obligation a new tax which fell heavily on the population of the Haemus Mountains .