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 the Dardanelles Treaty of the Dardanelles The Treaty of the Dardanelles (also known as the Dardanelles Treaty of Peace, Commerce, and Secret Alliance, the Treaty of Çanak, the Treaty of Chanak or ) was concluded between the Ottoman Empire and the United Kingdom of Great Britain and Ireland on 5 January 1809 at Çanak, Ottoman Empire. The treaty ended the Anglo-Turkish War. The Porte restored extensive British commercial and legal privileges in the empire. The United Kingdom promised to protect the integrity of the Ottoman Empire against the French threat, both with its own fleet and through weapons supplies to Constantinople. The