McDonald's Corporation is one of the world's largest chain of hamburger fast food restaurants, serving nearly 47 million customers daily.At one time it was the largest global restaurant chain, but it has since been surpassed by multi-brand operator and sandwich chain Subway.

In addition to its signature restaurant chain, McDonalds Corporation held a minority interest in Pret A Manger until 2008, was a major investor in the Chipotle Mexican Grill until 2006, and owned the restaurant chain Boston Market until 2007.

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% over the three years ending in 2007 to $22.8 billion, and 9% growth in operating income to $3.9 billion.

McDonald's primarily sells hamburgers, cheeseburgers, chicken products, french fries, breakfast items, soft drinks, milkshakes, and desserts. In response to obesity trends in Western nations and in the face of criticism over the healthiness of its products, the company has modified its menu to include healthier alternatives such as salads, wraps and fruit.

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