For a period that has come to be so strongly associated with the Islamic influence and rule in India, Medieval Indian history went for almost three whole centuries under the so-called indigenous rulers, that included the Chalukyas, the Pallavas, the Pandyas, the Rashtrakutas, the Muslims rulers and finally the Mughal Empire. The most important dynasty to emerge in the middle of the 9th century was that of the Cholas.
The Palas
Between 8th and 10th centuries A.D., a number of powerful empires dominated the eastern and northern parts of India. The Pala king Dharmpala, son of Gopala reigned from the late 8th century A.D. to early 9th century A.D. Nalanda University and Vikramashila University were founded by Dharmpala.
The Senas
After the decline of the Palas, the Sena dynasty established its rule in Bengal. The founder of the dynasty was Samantasena. The greatest ruler of the dynasty was Vijaysena. He conquered the whole of Bengal and was succeeded by his son Ballalasena. He reigned peacefully but kept his dominions intact. He was a great scholar and wrote four works including one on astronomy. The last ruler of this dynasty was Lakshamanasena under whose reign the Muslims invaded Bengal, and the empire fell.
The Pratihara
The greatest ruler of the Pratihara dynasty was Mihir Bhoja. He recovered Kanauj (Kanyakubja) by 836, and it remained the capital of the Pratiharas for almost a century. He built the city Bhojpal (Bhopal). Raja Bhoja and other valiant Gujara kings faced and defeated many attacks of the Arabs from west.
Between 915-918 A.D, Kanauj was attacked by a Rashtrakuta king, who devastated the city leading to the weakening of the Pratihara Empire. In 1018, Kannauj then ruled by Rajyapala Pratihara was sacked by Mahmud of Ghazni. The empire broke into independent Rajput states.
The Rashtrakutas
This dynasty, which ruled from Karnataka, is illustrious for several reasons. They ruled the territory vaster than that of any other dynasty. They were great patrons of art and literature. The encouragement that several Rashtrakuta kings provided to education and literature is unique, and the religious tolerance exercised by them was exemplary.
The Chola Empire of the South
It emerged in the middle of the 9th century A.D., covered a large part of Indian peninsula, as well as parts of Sri Lanka and the Maldives Islands.
The first important ruler to emerge from the dynasty was Rajaraja Chola I and his son and successor Rajendra Chola. Rajaraja carried forward the annexation policy of his father. He led armed expedition to distant lands of Bengal, Orissa and Madhya Pradesh.
The successors of Rajendra I, Rajadhiraj and Rajendra II were brave rulers who fought fiercely against the later Chalukya kings, but could not check the decline of Chola Empire. The later Chola kings were weak and incompetent rulers. The Chola Empire thus lingered on for another century and a half, and finally came to an end with the invasion of Malik Kafur in the early 14th century A.D.
cOURTESY--http://india.gov.in/knowindia/medieval_history.php