During the second half of the nineteenth century Spain went through a comparatively large number of revolutions, dynastic changes and other internal difficulties. In 1886 Queen Isabella, a member of the Bourbon family, was driven out of the country by a revolution of her subjects. The latter, however, decided in favor of a continuation of the monarchial form of government and thereupon set out to find some European prince who would be willing to assume the burden of the Spanish crown. We have already heard that this quest was one of the principal direct causes of the Franco-Prussian War of 1870, because Napoleon III attempted to force a promise from King William of Prussia to the effect that the latter would not permit his relative, the Prince of Hohenzollern, to accept the crown of Spain which had been offered to him. In 1870, however, the Spanish people succeeded in inducing Amadeus of Italy, a relative of the ruler of the newly formed Italian kingdom, to become King of Spain. Only two years later, in 1872, the so-called Carlist War broke out which had its basis in the attempt of Don Carlos, also a member of the Bourbon family, to secure the crown of Spain to which he claimed to have prior rights to those of Queen Isabella's branch of the family. This war, which really was a civil war, was accompanied by a great deal of bloodshed and cruelty and finally brought about the abdication of King Amadeus. For a short time after that Spain became a republic, but in 1874 the people decided that their interests would be better served by a monarchy and they made the son of Queen Isabella, Alfonso XII, their King. The latter was married twice, first to Princess Mercedes and after her death to Archduchess Marie Christine of Austria. Of the former marriage the issue was one girl, Mercedes, who at the death of Alfonso XII in 1885 became Queen of Spain with her stepmother as regent. In 1886, however, a posthumous male heir was born who immediately upon his birth became legally King of Spain as Alfonso XIII. Of course Queen Christine's regency continued until Alfonso XIII became of age. During her regency Queen Marie Christine faced an arduous task in her attempt to maintain for her minor son the throne of his father, but in spite of the many difficulties that she had to face she succeeded. These difficulties were chiefly internal and of an economic nature, although those in connection with Spain's West Indian possessions were almost as vexing. For many years of this period Spain was more or less in a state of anarchy, and labor disturbances throughout the country took on a most violent form. In recent years, however, conditions have improved considerably and to-day the future of Spain is more promising than it has been for many decades.