19) What was the term used by the Sufis for the successor nominated by the teacher of a particular order or silsilah ?

20) In which region of India was the Suharawadi order of Sufism popular ?

21) In which region of India was the Firdausi order of Sufism popular ?

22) The most famous and the earliest biographer of Chaitanya, who wrote Chaitanya Charitamrita, was

23) The sage who is said to have Aryanised South India was