> The Mongols undoubtedly wiped out entire ethnic groups during their conquests.
They didn't. I checked. The fact that you write 'undoubtedly wiped out' without being able to name a single ethnic group, language, religion, culture that got wiped out says something. No?
> They killed millions of people.
They did kill people and were destructive as all empires are. But they weren't genocidal. And most of the 'brutality' is exaggerated for the benefit of oddly enough the conquering mongols and subjugated peoples.
> But to speak of the Mongols as "preservers of knowledge and culture" is silly.
They preserved it because they merged into local populations. Hence mughal persia, mughal india and the various khanates throughout central asia and china. As I said, they were multicultural and multiracial empire. They didn't force their language, customs, religions, etc on the conquered people. They did the oppposite. They adopted the local language, religions, customs. All the way from eastern europe to china to persia and the middle east. Now juxtapose that with what happened to european imperialism?
> but it hardly seems like something they deserve credit for.
It isn't a coincidence that marco polo went to china during the rule of the mongols. The mongols deserve credit for much of the modern world. Starting with the italian renaissance ( it isn't a coincidence that the italian renaissance, medicis, etc ) occurred during the mongol empire, to the rise of russian empire, the rise of china, the rise of the ottomans, etc.
It's remarkable how the mongols were so bloodthirsty and genocidal but the peoples they conquered are the most numerous in the world?
Now compare the mongols to the european imperialists who wiped out an entire hemisphere and more.
Here is a list of regions the mongols and their descendents conquered - china, india, persia, middle east, eastern europe, russia, central asia, etc. Tell me which of these people were wiped out. I'll wait.