In 1076 CE, the ascent of the most famous king of this Chalukya family, Vikramaditya VI, changed the balance of power in favour of the Chalukyas. His fifty-year reign was an important period in Karnataka's history and is referred to as the "Chalukya Vikrama era". His victories over the Cholas in the late 11th and early 12th centuries put an end to the Chola influence in the Vengi region permanently. Some of the well known contemporaneous feudatory families of the Deccan under Chalukya control were the Hoysalas, the Seuna Yadavas of Devagiri, the Kakatiya dynasty and the Southern Kalachuri. At their peak, the Western Chalukyas ruled a vast empire stretching from the Narmada River in the north to the Kaveri River in the south. Vikramaditya VI is considered one of the most influential kings of Indian history. Important architectural works were created by these Chalukyas, especially in the Tungabhadra river valley, that served as a conceptual link between the building idioms of the early Badami Chalukyas and the later Hoysalas. With the weakening of the Chalukyas in the decades following the death of Vikramaditya VI in 1126, the feudatories of the Chalukyas gained their independence.