Why can't Russia have An Lushan? (referring to former Russia) 200 points is a little less, the best answer is added.

/ziliao/2002-06/01/content _ 418805.htm This is a general situation of Russia, which will be helpful.

He and China have different political systems and uneven distribution of population and resources. It should be said that the division is very obvious. The population is concentrated in eastern Europe, which is not the main thing. It's very different from the Tang Dynasty now. You can't resist if you want to.

Forget it. I'd better give up answering. After all, I don't know much. I'd better not dream of 200 points.

I think LS's answers are all very good (at least better than mine), except the one who said Slavs have no surnames.