Which airline first used the advertising slogan "Fly the Friendly Skies" in a groundbreaking 1965 marketing campaign that would continue for over three decades?

Behind every successful transportation company is a memorable advertising slogan that captured the public's imagination and helped define their brand identity. This trivia question tests your knowledge of iconic transportation advertising history and how certain taglines revolutionized their respective companies' market positions. Can you identify which famous slogan belongs to which transportation company?

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United Airlines
Pan American World Airways (Pan Am)
Trans World Airlines (TWA)
American Airlines