Northwestern Nidadesia

Northwestern Nidadesia, officially known as the Vietnamese Autonomous Republic of Northwestern Nidadesia (Italian: Repubblica autonoma vietnamita della Nidadesia nordoccientale, Pangdao: Repubblika autonomu vietnamit dilong Nidadesia nordwest, Vietnamese: Việt Cộng hòa tự trị Tây Bắc Nidadesia), was a de facto state on the Island of Southeast Asia, along with the sister de facto state called Northeastern Nidadesia.