Flag of the Nguyễn dynasty, 1920�?945 Soon after Vietnam misplaced 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, quite a few resistance movements from the south refused to recognize the treaty and https://vitnam55667.blogoscience.com/37118528/8kbet-fundamentals-explained