The kingdom of Hungary does not exist…

The kingdom of Hungary does not exist for a year. (So nearly complete is the country's destruction that future Hungarians, when referring to total calamity, will use the word tatárjárás, meaning Tatar invasion.)

Had the Great Khan not died, much of Europe might have suffered a similar fate.

Batu Khan had told Subutai to plan to conquer all the way to "the great sea," (the Atlantic), and they had been putting the final touches on a plan to begin that conquest with an attack on Austria and Germany the following winter.

The Mongols prefer to fight in winter, using frozen lakes and rivers as highways to move at a pace that will see not equal until Germany's blitzkreig that opens the Second World War, whereas the heavily armored European knights can barely fight at all in winter weather.