Flag of the Nguyễn dynasty, 1920�?945 Following Vietnam lost Gia Định, the island of Poulo Condor, and three southern provinces to France with the Treaty of Saigon between the Nguyễn dynasty and France in 1862, lots of resistance actions from the south refused to recognize the treaty and ongoing to https://gk8899000.thelateblog.com/31517064/detailed-notes-on-vf555