Anglo-Portuguese Treaty of 1373 Anglo-Portuguese Treaty of 1373 The Anglo-Portuguese Treaty of 1373 was signed on 16 June 1373 between King Edward III of England and King Ferdinand and Queen Eleanor of Portugal. It established a treaty of "perpetual friendships, unions [and] alliances" between the two seafaring nations. It is the oldest active treaty in the world. It was confirmed "with my usual flourish" by John de Banketre, Clerk. It was reinforced throughout history, including in 1386, 1643, 1654, 1660, 1661, 1703, 1815 and by a secret declaration in 1899. It was recognized in the Treaties of Arbitration in the 20th century between Britain
Boundary Treaty of 1866 between Chile and Bolivia and Chile reopened talks which concluded with the Treaty of Sucre or Boundary Treaty between Bolivia and Chile of 1874 (see English version in ). The pact kept the 24th parallel as the boundary between Bolivia and Chile and Chile relinquished its former rights of condominium in return for no future nitrate tax increases over Chilean companies. Boundary Treaty of 1866 between Chile and Bolivia The Boundary Treaty of 1866 between Chile and Bolivia, also called the Mutual Benefits Treaty, was signed in Santiago de Chile on August 10, 1866 by the Chilean Foreign Affairs Minister Alvaro Covarrubias and the