Humans had quite the world wide civilization twelve thousand years ago. Then one of those Damn Meteors hit us about 11,600 years ago. It landed right on top of two miles of Ice. Then Things got Harry, that two mile of Ice was holding back massive lakes. So what happened well you read about it Noah big Flood, it is estimated that the oceans of the world rose by two hundred feet.
It does make me wonder what they are teaching in schools?