At the end of fiscal year 2012, Burger King reported it had almost 12,700 outlets in 73 countries; of these, 66 percent are in the United States and 95 percent are privately owned and operated with its new owners moving to an entirely franchised model by the end of 2013. BK has historically used several variations of franchising to expand its operations. The manner in which the company licenses its franchisees varies depending on the region, with some regional franchises, known as master franchises, responsible for selling franchise sub-licenses on the company's behalf. Burger King's relationship with its franchises has not always been harmonious. Occasional spats between the two have caused numerous issues, and in several instances the company's and its licensees' relations have degenerated into precedent-setting court cases.
The Burger King menu has expanded from a basic offering of burgers, French fries, sodas, and milkshakes in 1954, to a larger, more diverse set of product offerings. In 1957, the Whopper was the first major addition to the menu; it has since become Burger King's signature product. Conversely, BK has introduced