Which Norwegian explorer, who crossed Greenland in 1888, was best known for his "Fram" expedition?
Nansen's Fram expedition: Nansen's "Fram" expedition was an 1893–1896 attempt by the Norwegian explorer Fridtjof Nansen to reach the geographical North Pole by harnessing the natural east–west current of the Arctic Ocean. Fridtjof Nansen:  He led the team that made the first crossing of the Greenland interior in 1888, traversing the island on cross-country skis.
Fridtjof Nansen