Which airline's famous "Fly the Friendly Skies" advertising campaign ran for over 40 years before being temporarily retired in 1996, only to be revived again in 2013?

The transportation industry has seen some of the most memorable and impactful marketing campaigns in business history. Airlines, in particular, have created iconic commercials that not only promoted their services but also became cultural touchstones. This trivia question tests your knowledge of one of the most successful airline advertising campaigns that completely transformed a carrier's brand perception and market position.

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United Airlines
American Airlines
Delta Air Lines
Pan American World Airways