Early Human Cities

If humans first appeared 200,000 years ago, why did it take them 195,000 years to learn to build a city or a town? I would think that if they WERE human, they would have started building cities A LOT earlier.

Human intelligence has not changed significantly in that time span of 200,000 years. However the sea level has changed. From 200,000 BC until 10,000 BC the sea level was 400 feet lower than it is today. The sea level had been at that place for the previous two million years. Four hundred feet lower than today. The entire continental shelf was exposed and the edge of the continental shelf is where the water met the land.

Conclusion and prediction: Human cities were built on land that is now all under water.  We will find the ruins of Ancient human city that still exist on the edge of the continental shelf.   We have evidence of Neanderthal Mining operations a hundred thousand years ago, why NOT human cities?

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William Schaeffer