Despite losing its maritime coast, the so-called Litoral Department, after the War of the Pacific, Bolivia has historically maintained, as a state policy, a maritime claim to that part of Chile; the claim asks for sovereign access to the Pacific Ocean and its maritime space. The issue has also been presented before the Organization of American States; in 1979, the OAS passed the ''426 Resolution'', which declared that the Bolivian problem is a hemispheric problem. On 4 April 1884, a truce was signed with Chile, whereby Chile gave facilities of access to Bolivian products through Antofagasta, and freed the payment of export rights in the port of Arica. In October 1904, the Treaty of Peace and Friendship was signed, and Chile agreed to build a railway between Arica and La Paz, to improve access of Bolivian products to the ports.