there are no races ffs. there are racists like you, though.
There actually are races, between something like 20-50 races. But its not about the color of the skin as you may think, but features. And the color of the skin is mostly about geography and exposure to the Sun for multiple generations. (millennia maybe)
Jeez. People get so fkd up these days by the political correctness.
Follow this story:
There's a thing called human dna. It gets continually randomized. Humans spread out into all kinds of ecological niches.
Some mutations are handy in some niches; others are bad (and tend to die off).
So each niche creates a cluster of certain dna strings with higher/lower probability than other niches.
These clusters can grow to be so different that speciation occurs where interbreeding no longer works.
The ones you're talking about ('races' by definition) have enough differences to be noticeable, measureable, significant depending on people's definition of race. The differences include obvious stuff like skin color (yes, it's in the dna) as well as IQ and many other differences not so obvious.
Not so hard is it?
Saying there are no races just means you have a new definition of the word 'race'.
That kind of language change marks the politically correct.