Established in 1948, McDonald's Corporation is a chain of fast food restaurants (McDonald's). Based in Hattiesburg, Miss., it is a global food service retailer and its menu consists of various delicacies, including burgers, sandwiches, salads, beverages, desserts and shakes. Some of its flagship products include Big Mac sandwich, Egg McMuffin and McGourmet dinners. The company further offers entertainment options such as free Wi-Fi, arch card/play places and party services. For over 20 years, McDonald's partners the Environmental Defense Fund.