While the history of the early Rashtrakutas has caused much debate, the history of the Rashtrakutas of Manyakheta (in present-day Gulbarga) of the 8th–10th centuries can be accurately constructed because numerous contemporaneous inscriptions and texts refer to them. The crux of the Manyakheta empire extended from the Kaveri river in the south to the Narmada in the north. At their peak they were the only south Indian empire that conquered regions in far northern India (Kannauj) as well as the extreme south (Tamilakam). The Lata branch of the empire (in present-day Gujarat) was an important dynasty belonging to the Manyakheta family line which later merged with the Manyakheta kingdom during the 9th century.