[Answer] 4. Founded in November of 1969, in Columbus, Ohio, this successful fast food chain specializes in square-shaped hamburgers, and the ever popular Frosty.

Step 1 : Introduction to the question "4. Founded in November of 1969, in Columbus, Ohio, this successful fast food chain specializes in square-shaped hamburgers, and the ever popular Frosty."

...1. Burger King 2. McDonald's 3. Wendy's 4. Hardee's The source of the hilarious advertising campaign featuring Clara Peller as the old woman searching for more meat in her hamburger, asking, "Where's the beef?", Wendy's quickly became one of America's favorite meal spots.

Step 2 : Answer to the question "4. Founded in November of 1969, in Columbus, Ohio, this successful fast food chain specializes in square-shaped hamburgers, and the ever popular Frosty."

Wendy's:

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