Which innovative brand element did Pan Am introduce in 1955 that revolutionized airline visual identity and is now standard practice across the industry?

Pan American World Airways (Pan Am) was once the largest international air carrier in the United States and a pioneer in commercial aviation. Though the airline ceased operations in 1991, its brand legacy continues to influence the transportation industry today. Test your knowledge about this iconic airline's brand history and its impact on the transportation sector.

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The blue globe logo ("Blue Meatball") that became one of the most recognizable airline symbols worldwide
The first use of a celebrity spokesperson in airline advertising
The practice of naming individual aircraft after destinations
The introduction of distinctive crew uniforms designed by fashion houses