User blog comment:Seiga Miyako/Finland, Hungary, and Mongolia/Asia/@comment-32656-20121008203733

A longer lasting/further expanding Mongol Empire would not spread Buddhism more than otl - really, the most that could happen would be the "Kalmykia" area of Russia is slightly larger or more populous.

Defintely no way that they could spread it to Hungary or Finland. Really, the vast majority of Mongols were not Buddhist.

The Finns, to some degree, may be able to come up with their own constructions of this nature. The Hungarians, not so much - they are so close to the rest of Europe - and the populated areas, at that - that it just wold not be lasting.