Prince Sixtus of Bourbon-Parma attempted came from which of the two countries that made up The Powers' alliance in 1879?
Prince Sixtus of Bourbon-Parma Prince Sixtus of Bourbon-Parma (1 August 1886 – 14 March 1934) was a son of Robert I, the last reigning Duke of Parma. He was a prince of the Parmesan branch of the royal House of Bourbon; a Belgian officer in World War I; and the central figure in the Sixtus Affair, an attempt to negotiate a treaty to end Austria-Hungary's participation in the Great War separate from its Central Powers allies. He also wrote a number of books.
Frederick William III of Prussia Frederick William III (German: "Friedrich Wilhelm III" ) (3 August 1770 – 7 June 1840) was king of Prussia from 1797 to 1840. He ruled Prussia during the difficult times of the Napoleonic Wars and the end of the Holy Roman Empire. Steering a careful course between France and her enemies, after a major military defeat in 1806, he eventually and reluctantly joined the coalition against Napoleon in the "Befreiungskriege". Following Napoleon's defeat he was King of Prussia during the Congress of Vienna which assembled to settle the political questions arising from the new, post-Napoleonic order in Europe. He was determined to unify the Protestant churches, to homogenize their liturgy, their organization and even their architecture. The long-term goal was to have fully centralized royal control of all the Protestant churches in the Prussian Union of churches.