In medieval India, why was the mansabdari system introduced?

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

Zabti system was introduced by –

Which medieval ruler introduced the system of “patta” and “qabuliyat” to help the peasants?

Maize (makka) was introduced into India in the seventeenth century via

Maize (makka) was introduced into India via