In Europe, the Mongols slaughtered the aristocratic knighthood of the continent, but, disappointed with the general poverty of the area compared with the Chinese and Muslim countries, turned away and did not bother to conquer the cities, loot the countries, or incorporate them into the expanding empire. In the end, Europe suffered the least yet acquired all the advantages of contact through merchants such as the Polo family of Venice and envoys exchanged between the Mongol khans and the popes and kings of Europe.