American soldiers who entered Germany at the end of World War 2 made the liberating of POW camps a priority. At camp after camp, they found stockpiles of fluoride stored near the water supply. When they asked what the fluoride was used for, they were told that the Germans used the substance as an additive to the prisoners water, to make them docile(submissive). This is the first known incidence of intentionally fluoridating drinking water. America adds fluoride to our drinking water to prevent tooth decay. -___- yeah right.