Treaty of Paris (1815) notably Prussia, initially demanded that France cede significant territory in the East, rivalry among the powers and the general desire to secure the Bourbon restoration made the peace settlement less onerous than it might have been. The treaty was signed for Great Britain by Lord Castlereagh and the Duke of Wellington and by the duc de Richelieu for France; parallel treaties with France were signed by Austria, Russia, and Prussia, forming in effect the first confederation of Europe. The Quadruple Alliance was reinstated in a separate treaty also signed 20 November 1815, introducing a new concept in European diplomacy, the
Nine-Power Treaty Nine-Power Treaty The or Nine Power Agreement () was a 1922 treaty affirming the sovereignty and territorial integrity of China as per the Open Door Policy. This was after the Suzerainty system fell apart after the Western invasions of the Opium Wars, that outlawed the Chinese "Closed Door Policy" into China of the former Imperial Qing dynasty. The Nine-Power Treaty was signed on 6 February 1922 by all of the attendees to the Washington Naval Conference: the United States, Belgium, the British Empire, Republic of China, France, Italy, Japan, the Netherlands, and Portugal. United States Secretary of State John Hay