Treaty of Rastatt in European politics, associated with the shift to the balance of power politics. Austria began to negotiate the treaty with France after it had been abandoned by its allies, particularly Great Britain, during negotiations for the Treaty of Utrecht. Great Britain feared a possible connection of Austria and Spain in the person of the Emperor Charles VI, who became emperor in 1711 and claimed the Spanish throne, as it would shift the balance of power politics in Europe to Habsburg Austria. In June 1713, France launched the Rhine campaign against the Holy Roman Empire, conquering Kaiserslautern, Landau and Breisgau. After
Nine-Power Treaty shown to be completely ineffective. During the Washington Naval Conference of 1921–1922, the United States government again raised the Open Door Policy as an international issue, and had all of the attendees (United States, Republic of China, Imperial Japan, France, Great Britain, Italy, Belgium, Netherlands, and Portugal) sign the Nine-Power Treaty which intended to make the Open Door Policy international law. The Nine-Power Treaty, concurrent with the Shangtung Treaty of the Washington Naval Conference, effectively prompted Japan to return territorial control of Shandong province, of the Shandong Problem, to the Republic of China. The Nine-Power Treaty was one of several