用英文介绍麦当劳历史.100个单词之内

McDonald's is the world's largest chain of fast food restaurants。It primarily sells hamburgers,cheeseburgers,chicken products,French fries,breakfast items,soft drinks,milkshakes and desserts。More recently,it has begun to offer salads,wraps and fruit。McDonald's business began in 1940,with a restaurant opened by siblings Dick and Mac McDonald in California。Their introduction of the "Speedee Service System" in 1948 established the principles of the modern fast-food restaurant。The original mascot of McDonald's was a man with a chef's hat on top of a hamburger shaped head whose name was "Speedee。" Speedee was eventually replaced with Ronald McDonald in 1968。