Personal unionA personal union is the combination of two or more states that have the same monarch while their boundaries, laws, and interests remain distinct. A real union, by contrast, would involve the constituent states being to some extent interlinked, such as by sharing some limited governmental institutions. Unlike the personal union, in a federation and a unitary state, a central (federal) government spanning all member states exists, with the degree of self-governance distinguishing the two.
Ferdinand I of RomaniaFerdinand (Ferdinand Viktor Albert Meinrad; 24 August 1865 – 20 July 1927), nicknamed Întregitorul ("the Unifier"), was King of Romania from 1914 until his death in 1927. Ferdinand was the second son of Leopold, Prince of Hohenzollern, and Infanta Antónia of Portugal, daughter of Ferdinand II of Portugal and Maria II of Portugal. His family was part of the Catholic branch of the Prussian royal family Hohenzollern.
House of BourbonThe House of Bourbon (ˈbʊərbən, also UKˈbɔrbɒn; buʁbɔ̃) is a dynasty that originated in the Kingdom of France and is a branch of the Capetian dynasty, the royal House of France. Bourbon kings first ruled France and Navarre in the 16th century, and by the 18th century, members of the Spanish Bourbon dynasty held thrones in Spain, Naples, Sicily, and Parma. Today Spain and Luxembourg have monarchs of the House of Bourbon. The royal Bourbons originated in 1272, when Robert, the youngest son of King Louis IX of France, married the heiress of the lordship of Bourbon.
House of HabsburgThe House of Habsburg (or Hapsburg) (ˈhæpsbɜːrɡ, Haus Habsburg, haʊ̯s ˈhaːpsˌbʊʁk), also known as the House of Austria, is one of the most prominent and important dynasties in history. The house takes its name from Habsburg Castle, a fortress built in the 1020s in present-day Switzerland by Radbot of Klettgau, who named his fortress Habsburg. His grandson Otto II was the first to take the fortress name as his own, adding "Count of Habsburg" to his title.
Otto von BismarckOtto, Prince of Bismarck, Count of Bismarck-Schönhausen, Duke of Lauenburg (Otto, Fürst von Bismarck, Graf von Bismarck-Schönhausen, Herzog zu Lauenburg, ˈɔtoː fɔn ˈbɪsmaʁk; 1 April 1815 – 30 July 1898), born Otto Eduard Leopold von Bismarck, was a Prussian and later German statesman and diplomat. From his origins in the upper class of Junker landowners, Bismarck rose rapidly in Prussian politics, and from 1862 to 1890 he was the minister president and foreign minister of Prussia.
Charles IV of SpainCharles IV (Carlos Antonio Pascual Francisco Javier Juan Nepomuceno José Januario Serafín Diego de Borbón y Sajonia; 11 November 1748 – 20 January 1819) was King of Spain and ruler of the Spanish Empire from 1788 to 1808. The Spain inherited by Charles IV gave few indications of instability, but during his reign, Spain entered a series of disadvantageous alliances and his regime constantly sought cash to deal with the exigencies of war.
FranceFrance (fʁɑ̃s), officially the French Republic (République française ʁepyblik fʁɑ̃sɛz), is a country located primarily in Western Europe. It also includes overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans, giving it one of the largest discontiguous exclusive economic zones in the world. Its metropolitan area extends from the Rhine to the Atlantic Ocean and from the Mediterranean Sea to the English Channel and the North Sea; overseas territories include French Guiana in South America, Saint Pierre and Miquelon in the North Atlantic, the French West Indies, and many islands in Oceania and the Indian Ocean.