Flag from the Nguyễn dynasty, 1920�?945 Right after Vietnam missing Gia Định, the island of Poulo Condor, and a few southern provinces to France with the Treaty of Saigon amongst the Nguyễn dynasty and France in 1862, a lot of resistance movements from the south refused to acknowledge the treaty https://charliedowci.blogginaway.com/31575467/facts-about-việt-nam-revealed