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Very important to know historical methods, the use of documentary materials and archaeological remains that examines the use of currency in maritime trade in the "Golden Triangle" of East Sumatra during the period up to the 19th century. This study show that control over an area is not always in line with the dominance of the use of currency in maritime trading activities in that region. This study is very important to do because so far rarely research on the "golden triangle" of East Sumatra which consists of Kota China, Kota Rentang and Kampai Island mainly concerns archaeological research on the distribution of ancient currencies. This article argues that trade routes in this region have developed from the 6th century to the 19th century, experiencing fluctuations and changes in control of political power. However, the use of currency in this region does not always go hand in hand with control of power. Therefore, this article will trace the ebb and flow of control of power over this area with the use of different currencies in business transactions in the history of this region until entering the 19th century.