Of course he is known in Britain, as is the phrase 'as rich as Croesus'.
Crassus, whose name is similar, was the richest man in Rome and became one third of the First Triumvirate with Julius Caesar and Pompey. he also has a great song in Horrible Histories.
People think that Hawaii was some idyllic paradise. It was anything but. Every person had a strict place in the social hierarchy. The lowest caste had it worst. They were subject to ritual killing and sacrifice.
The question about the Mongols conquering China is a little sketchy. Yes, they did invade and conquer MOST of China, but the Chinese never honored a surrender to the Mongols. Genghis Khan ended up leaving China with his army before the job was done. To make the question more clear, I would suggest changing to something along the lines of, "Did the Mongols ever conquer the Chinese capital?"
Crassus, whose name is similar, was the richest man in Rome and became one third of the First Triumvirate with Julius Caesar and Pompey. he also has a great song in Horrible Histories.
https://www.youtube.com/watch?v=g0pYzsyMTqw
Ran Rome with Pompey and Caesar
They're more famous than me
But I'm the worlds richest geezer
There's no-one richer than me
I'm minted!
https://en.wikipedia.org/wiki/Yuan_dynasty