When and where did atheism first start ?

[Fake Messiah]

No it's not like language or math because atheism is free thinking

I am assured that the only thing atheists have in common is a lack of belief in God. So there is nothing intrinsically free-thinking about atheism. Some atheists may be parroting people they have heard. Sad but true. 

But the point I was making holds: people aren't born with language, math, religion, or knowledge of how to behave in groups. All these things are learned. 

 and imposing religion on a child is transforming that child from a natural question-poser to a socialized question-rejecter. It is attack on human mind and its capacity to ask and know altogether.

It depends on who is doing the teaching. Do you think that no religious person asks questions or seeks new knowledge? 

If you say it is always true, in the case of every religious family, I think you are making an overly general statement, and it appears that you have shut down your ability to think questioningly about this issue.

When someone is in some religion or is ideological follower of some person means that he or she accepts certain things from that person that he never analyzes or puts under any scrutiny - things that are easily proven as lies and easily checkable but this person doesn't bother to research them as well as properly rationalize ideas that are insane.
That is true for every religion and/ or cult following, like Trump's followers.
That's why we have situations like this


And the difference between them and your hypothetical atheist that is "parroting people they have heard" is that that atheist researched what he/ she heard, while religious person is always parroting and then ignoring when it is wrong what they are saying.