In Indus Valley “Alluvial Soil” was used for making?

In Indus Valley “Alluvial Soil” was used for making?

وادی سندھ میں \"آلوویئل مٹی\" کو بنانے کے لیےکیا استعمال کیا جاتا تھا؟
Explanation

Alluvial soils are soils deposited by surface water.