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United Airlines, founded in 1926, holds the third position amongst the largest airlines in the world regarding its route journey and fleet size. United Airlines has its headquarters based in Chicago; the airline offers some scheduled flight services to 78 domestic destinations and 111 international destinations in 74 countries, including the USA, South and North America, Asia, Africa, Oceania, and Europe. It is amongst the founding members of the world’s largest airline alliance- the Star Alliance, with 28 member airlines.…