> White supremacy was the cause for the worst wars of the 20th century. I'm not sure this is accurate. Perhaps you could say that racial supremacy justified so

> White supremacy was the cause for the worst wars of the 20th century. I'm not sure this is accurate. Perhaps you could say that racial supremacy justified some of the worst wars of the 20th century, but "germans are better than slavs" barely pattern matches to "white supremacy", and "japanese are better than koreans/chinese/etc" doesn't at all. As for justified vs caused... There's a fine line to be drawn here, but I think it's worth drawing. Would Germany and Japan have gone to war without views of racial superiority? Quite possibly. Both were in rather poor strategic situations in the 1920s, and war was an acceptable way to resolve that at the time. Would they have poked the world's largest powers with a stick without that superiority to fall back on? Perhaps not.