You are confirming my argument, yes, even by the early 20th  there was no accepted consensus that that was wrong, colonial powers sliced and diced and bartered territory with no concern for those who actually lived on it, just as empires in Asia did the same. The historical animosities between the conquerors and the conquered (Chinese, Japanese, Vietnamese, Koreans, etc.) are just as strong, because they did the same.

The notion this is MORALLY WRONG is a very new, western concept, and you want to apply it to events even older than that?