US efforts to buy or acquire Greenland and Truman's offer in 1946 of $100 million. Truman's offer was made after the war in 1946 following fears that an hostile power could use Greenland for an attack on the US. Greenland was explored for the first time by Robert Peary of Bowdoin College and the US Navy from 1886-1902, in several expeditions from east to west and north to south. He was the first to reach the North Pole, and first to prove Greenland was an island by 1890. It is these discoveries that make the US the original explorer of Greenland. He received the thanks of the US Congress and his expeditions were supported by most of the well known organizations of the US, including the National Academy of the Sciences. It is Robert Peary's prescient insight- he was made Rear Admiral in the Navy- claiming Greenland for the US, was supported by Secretaries of State of the US from Seward in 1867 to others in 1900's and 1946, by Democrat Harry Truman, and today by president DJT. US Commanders inCbief said in 1946 that Greenland was "completely useless for Denmark," and was vital to keep the eastern seaboard of the US secure. It is also as Peary said important to keep the Monroe Doctrine and US leadership in the western hemisphere. ...