How did aryans impact society in india

The advent of Aryans has an important significance in the History of India. Aryans produced a rich oral tradition which throws light on their social, economic and political traditions and called Vedic tradition. The use of Iron was linked with Aryans which later helped to develop agriculture at an extensive scale. The rise of casteism is also linked with them but it arose at a later stage.

its b they wanted to be able to expand their trade..