McDonald's began in 1940 when Richard and Maurice McDonald opened a restaurant in California. The modern corporation formed in 1955 when Ray Kroc joined as a franchise agent and later purchased the company. Today, it operates numerous locations worldwide through a franchise model. While primarily a fast food chain, McDonald's also generates income from owning many restaurant properties. The company has maintained its core menu while adapting to international markets. McDonald's remains one of the most recognizable brands in the global food service industry.