who was considered the most powerful chola ruler
Chola dynasty Rajaraja Chola I and Rajendra Chola I were the greatest rulers of the Chola dynasty, extending it beyond the traditional limits of a Tamil kingdom.[38] At its peak, the Chola Empire stretched from the island of Sri Lanka in the south to the Godavari-Krishna river basin in the north, up to the Konkan coast in Bhatkal, the entire Malabar Coast in addition to Lakshadweep, Maldives, and vast areas of Chera country. Rajaraja Chola I was a ruler with inexhaustible energy, and he applied himself to the task of governance with the same zeal that he had shown in waging wars. He integrated his empire into a tight administrative grid under royal control, and at the same time strengthened local self-government. Therefore, he conducted a land survey in 1000 CE to effectively marshall the resources of his empire.[52] He also built the Brihadeeswarar Temple in 1010 CE.[53]
Vedic period Early Vedic Aryans were organised into tribes rather than kingdoms. The chief of a tribe was called a rajan. The autonomy of the rajan was restricted by the tribal councils called sabha and samiti. The two bodies were, in part, responsible for the governance of the tribe. The rajan could not accede to the throne without their approval. The distinction between the two bodies is not clear. Arthur Llewellyn Basham, a noted historian and indologist, theorises that sabha was a meeting of great men in the tribe, whereas, samiti was a meeting of all free tribesmen. Some tribes had no hereditary chiefs and were directly governed by the tribal councils. Rajan had a rudimentary court which was attended by courtiers (sabhasad) and chiefs of septs (gramani). The main responsibility of the rajan was to protect the tribe. He was aided by several functionaries, including the purohita (chaplain), the senani (army chief), dutas (envoys) and spash (spies).[71] Purohita performed ceremonies and spells for success in war and prosperity in peace.[72]