History of the United States Trust Territory of Marie Byrd Land and Ellsworth Land Antarctica

In 1929 and 1935, Antarctic explorers Admiral Richard Evelyn Byrd and Lincoln Ellsworth claimed a territory in Antarctica for the United States. This region, now known as the United States Trust Territory of Marie Byrd Land and Ellsworth Land, was formally organized in 2008 and 2009. It encompasses the area in Western Antarctica between 90 degrees West and 150 degrees West, including the Territory State of Marie Byrd Land and the Territory State of Ellsworth Land in perpetual union. The governance of this area is based on The Articles of Confederation of the United States Trust Territory of Marie Byrd Land and Ellsworth Land, which were accepted on January 22, 2008, and ratified on March 20, 2009.