Nowadays everywhere around the world men mostly have short hair and women mostly have long hair. But was this always the case? I know that European royalty wore elaborate wigs but what about normal people with natural hair? Native American men had long hair too. So, I guess these are exceptions.
We don't really know, because it seems to be such an old tradition. I've written about it previously in How did the idea of men having short hair/ women having long hair come about?