What it was like 1,000,000,000 years ago

Sometimes I sit and wonder, what was it like a million years ago? Could cavemen ever Talk? Was the big bang true? Did Gods rule the world? I wish some people built a time machine and picked me to go, I would get a lot of stuff. I don't know if my ideas are true, but it is still a mystery of what happened 1,000,000,000 years ago.