Question

Who created the department of Diwan I Arz in Delhi sultanate

Answer 1

Ghiasuddin Balban created a separate department

Answer 2

Ghiasuddin Balban created a separate department.

The machinery of administration as it evolved under the Delhi sultanate and it was derived from the Abbasid and following it, the Ghaznavid as well as the Seljukid systems of administration.

Qutb al-Din Aibak aka Aibak was the first sultan who founded Delhi as Capital of Sultanate.