Thus, only the mountains & woods/forests of Central “europe” became a real obstacle for superior Mongol forces, i.e. grass was a key player.
Both hungarians and poles and lithuanians – all together too weak/helpless and no match for Mongols. Other factors discouraged Mongols to stay in Central europe (posts 13 &15). For references: factual history and documents from contemporaries; also serious analytical works from professional historians; i.e. not from immature & naïve simplification. As always, cluelessness leads into believing that speculative “history” is the reality.