Stevia is a "wonder crop" with a strong sweet taste that has been used to sweeten drinks and make tea since the sixteenth century. During World War II, England started to examine stevia as a substitute for sugar, which was hard to find. But in the 1970s, the Japanese started to use stevia to replace the banned artificial sweetener, Saccharin. Currently, the stevia plant is grown in various nations around the world, such as India, China, Vietnam, Brazil, South America, South Korea, Taiwan, Israel, Argentina, Colombia, etc.