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Many of us are wondering why hamburger is called "hamburger” when actually, there’s no ham in it. The answer is simply because Hamburg, Germany, made the first hamburgers. However, who invented the first hamburger still remains unknown. McDonald, ranking number one among all restaurants with 26, 000 stores in 119 countries, serves billions of hamburgers worldwide. In fact, it has sold 12 hamburgers for every person in the world.