According to belief Gangaridai was a part of King Ashoka's Empire. During the rule of the Kushanas the major part of the state was ruled by three agents. Over a period of time these rulers refused to accept the suzerainty of the Kushanas and thereby became independent. This was followed by a period of uncertainty and turmoil. According to an inscription Simha Varman and his son Chandra Varman were the rulers of Bengal when the Guptas had come to power (319-20 A.D.). As per the Allahabad Stone Pillar inscription Samatata was a part of Samudragupta's kingdom. The inscription gives evidence that North Bengal was included within the Gupta Empire.
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