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:  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. Central Powers:  The Powers' origin was the alliance of Germany and Austria-Hungary in 1879.
Austria-Hungary