Final answer:
The Delta Widget, the logo of Delta Air Lines, was introduced in 1959 as a representation of a jet's swept-wing design and marks a significant moment in Delta's history.
Step-by-step explanation:
The logo of Delta Air Lines, commonly known as the Delta Widget, was introduced in 1959. The Widget resembles the Greek letter Delta and was designed to signify a jet's swept-wing appearance. Over the years, Delta's logo has undergone several redesigns, but its essence remains tied to the original Widget concept. The significance of the Widget and its introduction marked a pivotal moment in Delta's brand evolution, as it transitioned into the jet age and became a more globally recognized airline. It is not just a corporate logo but also a symbol of the airline's heritage and its promise of service and innovation to its customers.