Ray Kroc opened the first McDonald's restaurant in 1955 in Des Plaines, Illinois, establishing the McDonald's Corporation. McDonald's principles focus on quality, service, and cleanliness for customers. As of 2008, McDonald's had over 31,000 locations worldwide, 400,000 employees, and served 47 million customers daily. While experiencing global success, McDonald's also faces threats such as economic slowdowns, competition, and concerns over the health effects of its products.