The Mansabdari System introduced by Akbar was borrowed from the system followed in

The Mansabdari system introduced by Akbar drew on Central Asian, specifically Turko‑Mongol, traditions and organizational practices; modern summaries describe the Mansabdari as being of Central Asian origin, linking it to Mongol administrative‑military models [1]. Akbar adapted and formalized this model into a graded, centralized service in which nobles held mansabs (ranks) with specified Zat and Sawar levels that determined personal status and cavalry quotas (10 to 10,000), reflecting the military‑bureaucratic ordering characteristic of Turko‑Mongol systems rather than Persian or Afghan administrative fashions [2]. Thus the most accurate choice among the options is Mongolia, representing the Turko‑Mongol/Central Asian source of the Mansabdari framework [2].

Sources

1. [1] http://magadhmahilacollege.org/wp-content/uploads/2020/05/Mansabdari-System-of-Akbar.pdf
2. [2] History , class XI (Tamilnadu state board 2024 ed.) > Chapter 14: The Mughal Empire > Mansabdari System > p. 206