Boundary treaty of 1881 between Chile and Argentina

The Boundary Treaty of 1881 between Chile and Argentina established the border between the two countries, resolving a long-standing dispute over the Patagonia region. The treaty defined the border along the 45th parallel south, with Chile gaining control of the eastern part of the Strait of Magellan and Argentina gaining control of the western part. This treaty marked a significant milestone in the peaceful resolution of border disputes between the two countries.