Quote Originally Posted by Doktor View Post
Are you saying the Chinese made a strategic mistake by letting Europe alone, seeing it as poor and underdeveloped (to be a threat or worth the fight)?
By the time the Mongols could truly focus on taking Europe, their empire already fragmented into various khanates. To truly take Europe, the Mongols needed a united Empire, not so much as military strength required but to be sure that you won't get stabbed in the back while you're busy taking European castles. That is you can count on the Yuan to send an army to quell an uprising in Persia or Syria while you clobbering the Franks.

As such, conquering Hungary isn't exactly going to expand your riches while the Mamluks were threatening to cut off your trade.