as the war escalated the spraying of deval ians increased dramatically and much of the land in south vietnam was contaminated and left barren. the defoliant known as agent orange was made from the same chemical substances as herbicides used in the us but it was twenty five times more potent. agent orange also contained dioxin the most toxic chemical ever produced. dioxin remains in the environment for many decades and causes a variety of health problems. several million vietnamese and american soldiers who fought in vietnam were affected by agent orange. their children and grandchildren continue to suffer the effects. dioxin remains in the soil of vietnam today and the land has yet to recover. that might have been the tween one nine hundred sixty six and sixty eight a lot of chemical was sprayed into aung sun mountains and along the border with flowers and all. that they did i get it for them the hills were covered with large trees that yeah i did thank. all those. that i want to be after the chemicals were sprayed all the trees died from truong song to acquiring tree wow for one thi