Judging by the amount of lands of that Mongols conquered, lack of cars wouldn't have stopped them from conquering Europe. Mongol empire at its peak spanned over

Judging by the amount of lands of that Mongols conquered, lack of cars wouldn't have stopped them from conquering Europe. Mongol empire at its peak spanned over 24 million square kilometres of land while To put that into perspective, the Roman Empire at its peak only spanned over 5 million square kilometres of land