The process of establishing sovereignty over The Two Archipelago Hoang Sa and Truong Sa Islands of Vietnam under the Nguyen dynasty

Since the beginning of the 19th century, the Nguyen Dynasty has inherited the sovereignty over the islands from the Nguyen and Tay Son lords. The Hue Dynasty managed, exploited the economy and exercised sovereignty over the Hoang Sa and Truong Sa archipelagos by the regular army and the central government apparatus with the participation of localities, implemented through royal decrees and recorded in the National History and National Maps of the Nguyen Dynasty. The sovereignty over the islands under the Nguyen Dynasty has also been internationally recognized through a massive set of documents recorded on the Woodblocks (2009) and the Imperial Records (2014). These are full, accurate, transparent evidences, affirming that Vietnam was the only country before World War II (1945) to have this advantage.