McDonald’s Corporation (NYSE: MCD) is the world’s largest chain of hamburger fast food restaurants, serving around 68 million customers daily in 119 countries.  Headquartered in the United States, the company began in 1940 as a barbecue restaurant operated by the eponymous Richard and Maurice McDonald; in 1948 they reorganized their business as a hamburger stand using production line principles. Businessman Ray Kroc joined the company as a franchise agent in 1955. He subsequently purchased the chain from the McDonald brothers and oversaw its worldwide growth.

A McDonald’s restaurant is operated by either a franchisee, an affiliate, or the corporation itself. The corporation’s revenues come from the rent, royalties and fees paid by the franchisees, as well as sales in company-operated restaurants. McDonald’s revenues grew 27 percent over the three years ending in 2007 to $22.8 billion, and 9 percent growth in operating income to $3.9 billion.

Info gleaned from Wikipedia