ディエンビエンフー
Điện Biên Phủ was rather politically removed from central Vietnamese control until 1841. In this year, under the Nguyễn dynasty, Điện Biên Phủ was directly incorporated into the Vietnamese political system when they established the town as an administrative district. This was partly done for more direct control of the region and to stop bandits who were exploiting the opium trade.