That's a pretty strong statement. You know the saying: strong statements require equally strong evidence.

It's refuted by the Buddhist nationalists killing Rohingya Muslims. Not sure about the concept of evidence. For best epistemology you'd have to say "if this was false, we'd see evidence X, and we don't, or evidence Y, and we don't see that either, and nobody's thought of what evidence Z might be, so here we are, it seems true so far."

What happened to African cultures? Who destroyed it?

Why should I be answering that question? If you have an explanation for the above then state it clearly, rather than hope for others to argue in your stead.

Unless you think that Judaism, Hinduism, Buddhism, Shinto, Daoism, or the many millions of polytheistic cults are not man made religions, then you are completely wrong. Wars and atrocities have been fought using every religion and ideology in history as a pretext.