History of the hamburger
Originally just a ground beef patty, as it is still interpreted in multiple languages, and the name "hamburger" may be a reference to ground beef sold in Hamburg; evidence also suggests that the United States was the first country to create the "hamburger" as it is known today, where two slices of bread and a ground beef patty were combined into a "hamburger sandwich" and sold as such. The hamburger soon included all of its current characteristic trimmings, including onions, lettuce, and sliced pickles.