>>7279883>fancy and expencive af horse for 100 heavy armored knights>eats and costs as small peasant village>20000 horses for mongolian tumen>if this little guy dies - you can eat himNothing can beat them on open/steppen lands back then.
https://en.wikipedia.org/wiki/Battle_of_LegnicaEurope was at panic, if you look closer to actual historical sources of first invasion. Gladly, mongolians don't care much about europe behind poland or hungary. Too far from the Great Steppe. Besides that - they're were mostly pre-feudal nomadic society, based on family military aristocraty, looting and trafficking averyone they can beat, so their empire didn't last long as a whole.