In the United States, when we look to explore tea and tea drinking culture we typically look to the east, to the tea producing and drinking countries of Asia. These countries are home to the "Camellia sinensis" evergreen plant, the source of all true teas. In the last century, there have been reasons to look both to the east and then to the south. Argentina became a major supplier of commercial tea to the United States during WWII when our access to teas from Japan and China were limited. Even today, Argentina tea production ranks highly, just below Japan on the list of tea exporters and remains among the top 10 tea producing/exporting countries in the world.
Besides relocated Camellia sinensis plants, South America also offers a tea-like drinking culture related to its' own native plants that produce Yerba Mate and Guayusa "teas". These caffeinated plants offer a beverage with a sustained energy level and many of the similar health benefits of tea. For tea drinkers who enjoy expanding their tasting horizons, Guayusa offers a smoother flavor than Yerba Mate without any of the bite or bitterness.