Original sentence: Byrd in 1926 (just a few days before the Norge) – are all disputed, as being either of dubious accuracy or outright fraud.Some of those disputing these earlier claims therefore consider the crew of the Norge to be the first verified explorers to have reached the North Pole.The Airship Norge was a semi-rigid Italian-built airship that became one of the first aircraft to reach the North Pole on May 12, 1926.The three previous claims to have arrived at the North Pole – by Frederick Cook in 1908, Robert Peary in 1909, and Richard E
Edited sentence: Because the three previous claims to have arrived at the North Pole – by Frederick Cook in 1908, Robert Peary in 1909, and Richard E.Byrd in 1926 (just a few days before the Norge) – are all either dubious or fraudulent, the crew of the Norge are the first verified explorers to have reached the North Pole.The Airship Norge was a semi-rigid Italian-built airship that became the first aircraft to reach the North Pole on May 12, 1926