 Richard Eaton writes that Persian was much less widely understood in the  region than vernacular languages  . During the turn of the 16th century, the Bahmani Sultanate splintered into the Deccan Sultanates, which were also Persianate in culture.
<coherence>  Richard Eaton writes that Persian was much less widely understood in the  region than vernacular languages  . During the turn of the 16th century, the Bahmani Sultanate splintered into the Deccan Sultanates, which were also Persianate in culture.
 Richard Eaton writes that Persian was much less widely understood in the region than vernacular languages , and contrasts this situation with the Persian proficiency in the north of the subcontinent . During the turn of the 16th century, the Bahmani Sultanate splintered into the Deccan Sultanates, which were also Persianate in culture.