Who founded the independent state of Awadh? What was the impact of prolonged peace and prosperity in Awadh?

Nawab Saadat Khan, also known as Burhan-ul-Mulk, founded the independent state of Awadh.

The prolonged period of peace and economic prosperity under the Nawabs of Awadh led to the growth of a distinct culture known as the 'Lucknavi' culture. Lucknow developed as an important centre of performing arts, literature and architecture. Imambaras are excellent examples of the historical structures of that time.