मुगल भू-राजस्व व्यवस्था के तहत प्रतिवर्ष जुताई की जाने वाली और सबसे उपजाऊ भूमि को क्या कहा जाता था?

Which distinguishing feature separated Suhrawardi Sufi saints from Chishti saints in medieval India?

Khizr Khan occupied Delhi and established the Sayyid dynasty after the fall of which dynasty of the Delhi Sultanate?

Which Persian doctor wrote a famous medical text between 1000 and 1050 AD that was studied for centuries?