Question

Why man started to live in small groups along river banks?

Answer 1

Hello there your answer

men started to live in small groups along river  banks for

1) cultivation of crops

2) for their daily activities like bathing cooking food etc...

early men used to live near banks of river  because they get so many of their things done with river it is important for them.

Hope it helps you  dear...

Answer 2

A man started to live in small groups 
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a man started to live in small groups along river banks
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                the man started to live in small groups along river banks 
            Because of the Following Reasons 

=> 

1) When the man lives in a forest then, man can't get the enough water 

2) to get enough water 

3) if they live in groups then there were fewer chances of attacks of wild animals 

4) when people live in a forest then the man doesn't get proper food 

5) To get proper food and cooked food 

6) For cultivation of crops