The Western Chalukya Empire (Kannada:ಪಶ್ಚಿಮ ಚಾಲುಕ್ಯ ಸಾಮ್ರಾಜ್ಯ) ruled most of the western Deccan, South India, between the 10th and 12th centuries. What did the Chalukya kings encourage writers to use