Sufism or mysticism emerged in the 8th century. Some of the early known Sufis are as follows: Rabia al-Adawiya, Al-Junaid, and Bayazid Bastami. Sufism evolved into a well-developed movement by the end of the 11th century.
The important characteristics of the Vijayanagar administration was the Amara-Nayaka system. The top-grade officers of the army were known as Nayaks or Palaiyagars or Poligars. These officers were granted land in lieu of their services.