Question

Who was the first man to climb mount everest without oxygen?

Answer 1

HERE IS UR ANSWER:-

REINHOLD MESSNER.

HOPE IT HELPED U!✌✌

Answer 2

Answer:

Messner and Habeler

Sometime between 1 and 2 in the afternoon on May 8, 1978, Messner and Habeler achieved what was believed to be impossible—the first ascent of Mt. Everest without oxygen.