 The third millennium BC Vučedol culture (from the Vučedol site near Vukovar, Croatia) is famous for its ceramics.Darius the Great, king of Persia, crossed the river in the late 6th century BC to invade European Scythia and to subdue the Scythians.Alexander the Great defeated the Triballian king Syrmus and the northern barbarian Thracian and Illyrian tribes by advancing from Macedonia as far as the Danube in 336 BC.