It prevented the federal government's choice to stop making treaties and allowed it to continue passing the laws to carry out its Native American policies
It was the the Viking.
Actually, the first person known to have settled in Greenland was Erik the Red, from Norway, who first sailed to Iceland and then to Greenland.
This armistice signed on July 27, 1953, formally ended the war in Korea. North and South Korea remain separate and occupy almost the same territory they had when the war began. The Korean War, which began on June 25, 1950, when the North Koreans invaded South Korea, officially ended on July 27, 1953.