You need something to neutralize their heavy cavalry and to counter their archers. This can be done with a combination of spearmen and bows (archers or crossbows) or archers with stakes. England has the best archers and its archers can plant those stakes. The danger with spearmen is that the will crumble before the dread of the Mongols. Stakes don't route and are excellent in killing Mongol heavy cavalry. I voted for England.