As far as i know there are three river valley civilization which are indus river valley and indus and tigris river valley.
Indus; Yellow; 3000
River valleys provided early civilizations with fertile soil that allowed for farming.
Ruins of early civilizations were most commonly found in valleys formed by the flow of dried out rivers.
Mountainous regions are very poor places for farming, which is why the early civilisations arose in the fertile river valleys and plains - Egypt, the Fertile Crescent, Indus valley, the Chinese river valleys.
They were in fertile, well watered river valleys.
Indus; Yellow; 3000
5000 B.C. is when the first civilizations emerged in river valleys.
river valleys
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Agriculture required rich soils such as are found in river valleys
River valleys provided early civilizations with fertile soil that allowed for farming.
Ruins of early civilizations were most commonly found in valleys formed by the flow of dried out rivers.
they can get many resources
Early civilizations were founded in major river valleys.
easy acces for water
Mountainous regions are very poor places for farming, which is why the early civilisations arose in the fertile river valleys and plains - Egypt, the Fertile Crescent, Indus valley, the Chinese river valleys.
because they needed water