Question

why do people prefer to live along river valleys​

Answer 1

Because River valleys are most fertile region and the first human settlement were all done to do agriculture. The fertile soil in these regions were best suited for agriculture. Hence people first settled near river valleys..

Answer 2

People prefer to live along river valleys because River valleys are most fertile region and the first human settlement were all done to do agriculture. The fertile soil in these regions were best suited for agriculture. Hence people first settled near river valleys.