Prince Sixtus of Bourbon-Parma attempted came from which of the two countries that made up The Powers' alliance in 1879?
Central Powers The Central Powers (German: "Mittelmächte" ; Hungarian: "Központi hatalmak" ; Turkish: "İttifak Devletleri" or "Bağlaşma Devletleri" ; Bulgarian: Централни сили "Tsentralni sili" ), consisting of Germany, Austria-Hungary , the Ottoman Empire and Bulgaria – hence also known as the Quadruple Alliance (German: "Vierbund" ) – was one of the two main factions during World War I (1914–18). It faced and was defeated by the Allied Powers that had formed around the Triple Entente. The Powers' origin was the alliance of Germany and Austria-Hungary in 1879. The Ottoman Empire and Bulgaria did not join until after World War I had begun, although the Ottoman Empire retained close relations with both Germany and Austria-Hungary since the beginning of the 20th century.
Princess Marie Louise of Bourbon-Parma Princess Maria Luisa of Bourbon-Parma (17 January 1870 – 31 January 1899) was the eldest daughter of Robert I, the last reigning Duke of Parma. She became Princess-consort of Bulgaria upon her marriage to Ferdinand of Bulgaria, the then prince-regnant (who became Tsar after her death). She was the mother of Tsar Boris III of Bulgaria.