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
Treaty of London (1827) independence of Greece, Turkey was forced by the Treaty to give the Danube Delta and its islands, and a considerable portion of the Black Sea south of the Kuban estuary over to Russia. Because of these new territorial arrangements and the other articles contained in the treaty, Britain and the other European powers came to regard the Treaty of Adrianople as infringing on the promises that Russia had made in the Treaty of 1827. Treaty of London (1827) The Treaty of London was signed by the United Kingdom, France, and Russia on 6 July 1827. The three main European powers