what is superior? maybe humans are the most perfect creation, so humans can adapt to the environment or the upcoming era of evolution with another answer humans are the most perfect creatures in the world can follow, adapt in their own ways even before the modern era like this hundreds of years ago humans had many knowledgeable.
I am not talking about adaptation and I am not saying humans are not the most perfect, it is true that humans are the superior, but there were existing creatures before the evolution of humans, this make me to be thinking it is possible another creature may evolve later in many years that can be more than millions of years. It is just an assumption.
in the future it would be a single 'race' of mixed colour.. i just hope the civility of the future evolved people wont be acting like todays millennial generation..
This would have been easy if the world is led by one person like the world president or world emperor. The country barrier will make this not to be possible. The country is what is causing great distinction in races.