What geographic knowledge was accumulated in the states of the Ancient East?

The inhabitants of the Ancient East lived along the rivers, they knew astronomy well to determine the timing of various agricultural works. For example, the Egyptians quite accurately determined the length of the year, made up their own calendar. The inhabitants of the Ancient East learned to determine the dates of river flooding. From Mesopotamia, the division of the year into 12 months, days into 24 hours has come down to us. It was the Chinese who invented the first compass.

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