I mean, they'd even taken up agriculture. Agriculture, the last refuge of scoundrels who wanted to devote their lives to working instead of scoodily-pooping. They also weren't particularly interested in artistic patronage or architecture. I mean, your palace may last forever, but my yurt can go anywhere. Five, the Mongols were probably responsible for the Black Death. By opening up trade, they also opened up vectors for disease to travel, in the case of the plague via fleas infected with Yersinia pestis. And at least according to one story, the Mongols intentionally spread the plague by catapulting their plague-ridden cadavers over the walls of Caffa in the Crimea.