The history of Odisha for several centuries after Kharavela is dark. From Hiuen Tsang's account it is evident that Harsha Siladitya's political sway extended to Odisha. Ptolemy, the famous Greek Geographer of the 2nd century A.D., testified to the existence of flourishing trade marts on the Odisha coast. In the 8th century A.D. Odisha's overseas activities were at their peak when the Sailendra Empire in present day Malaysia was established. According to Arab sources, the empire extended its power even into Cambodia and Assam. The prosperity of the Sailendra Empire continued through the 10th century A.D.
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