Krishna III whose Kannada name was Kannara was the last great warrior and able Rashtrakuta Emperor. He was a shrewd administrator and skillful military campaigner. He waged many wars to restore the glory of the Rashtrakutas and played an important role in rebuilding the Rashtrakuta empire. He patronised the famous Kannada poets Sri Ponna, who wrote Shanti Purana, Gajankusha, also known as Narayana, who wrote on erotics, and the Apabhramsha poet Pushpadanta who wrote Mahapurana and other works. His queen was a Chedi princess and his daughter Bijjabbe was married to a Western Ganga prince. During his rule he held titles such as Akalavarsha, Maharajadhiraja, Parameshvara, Paramamaheshvara, Shri Prithvivallabha etc. At his peak, he reigned over a vast empire stretching from at least the Narmada river in the north to at least the Kaveri river delta in the south. A copper grant of 993 issued by the Shilahara king of Thana states that the Rashtrakuta control extended from the Himalayas in the north to Ceylon in the south and from the eastern sea to the western seas. This grant also states that when the emperor Krishna III mobilised his armies, the kings of Chola, Bengal, Kannauj, Andhra and Pandya regions used to quiver.

Rashtrakuta was a Hindu dynasty ruling large parts of the Indian subcontinent between the 6th and 10th centuries. The earliest known Rashtrakuta inscription is a 7th-century copper plate grant detailing their rule from Manapur, a city in Central or West India. Other ruling Rashtrakuta clans from the same period mentioned in inscriptions were the kings of Achalapur and the rulers of Kannauj. Several controversies exist regarding the origin of these early Rashtrakutas, their native homeland and their language.