Though some of America's oldest fast food chains have been around for roughly a century, the real rise of fast food came after World War II. This was a time of innovation, when a postwar economic ...

But what’s the oldest chain restaurant? What’s the oldest fast food chain? We’ve compiled some of the most popular and a few of our favorites—all of which are at least 40 years old.

Not every fast-food joint is McDonald’s — and not all of them even survive. Here are some fast-food restaurants you might ...

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