I always knew that Pepsi, Coca-Cola and Fanta are American drinks. But I have been certain for about twenty years that Sprite and 7up are purely Ukrainian inventions, lol.
Your Sprite and 7up (and soda in general) tastes better (as it does throughout most of Europe). Sodas distributed in America are made with high fructose corn syrup rather than cane sugar, and the taste is dramatically different (and too sweet, if you ask me).