Do you really think that Europe and other parts of the world have not had wars?

Why do you think wars occur? Political fragmentation.

Ever heard of Pax Romana?

You commented this twice already as some sort of universal truth. But in fact the region known as modern-day China had one major conflict after another like they occurred in any other region in the globe. Also what does it mean to "maintain" civilization when at least 45 million people died under Mao due to famine, overwork and state violence? Is putting Uighurs in concentration camps "maintaining" civilization?

>at least 45 million

Not at least, 45 is on the high end of estimates

https://en.m.wikipedia.org/wiki/Great_Chinese_Famine

From your own Wikipedia link:

>Frank Dikötter, Chair Professor of Humanities at the University of Hong Kong and the author of Mao's Great Famine, estimated that at least 45 million people died from starvation, overwork and state violence during the Great Leap Forward, claiming his findings to be based on access to recently opened local and provincial party archives.

I recommend reading "On China" which describes this concept thoroughly.

> Also what does it mean to "maintain" civilization when at least 45 million people died under Mao due to famine, overwork and state violence? Is putting Uighurs in concentration camps "maintaining" civilization?

Yes?

I mean, the word "civilization" just makes reference to a complex society with certain societal and governmental structures. A civilization can be peaceful but it can also be brutal. Many (if not all) historical civilizations started wars, took slaves, forced people to adopt certain religions or customs, or made outright genocides, and that doesn't make them less of a civilization.