They all developed along the fertile banks of a river.
They all developed along the fertile banks of a river.
They all developed along the fertile banks of a river.
they all settled near arable land or by a river for irrigation crops
they all settled near arable land or by a river for irrigation crops
they all settled near arable land or by a river for irrigation crops
They all developed in areas around rivers, with some geographical protection from outside invaders.
They all developed in areas around rivers, with some geographical protection from outside invaders.
Development of irrigation
They all developed along the fertile banks of a river.
They all developed along the fertile banks of a river.
Development of irrigation
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