Spain origianally inhabited by Celts, Iberians, and Basques. It became a part of Roman Empire in 206 B.C. when it was conquered by Scipio Africanus. In A.D. 412, the barbarian Visigothic leader Ataulf crossed the Pyrenees and ruled Spain, first in the name of the Roman emperor and then independently. Internal dissension of Spanish Islam invited a steady Christian conquest from the north. In World War 1, Spain maintained a position of neutrality. In 1923, Gen Miguel Primo de Rivera became dictator. In 1930, King Alfonso XIII revoked the dictatorship, but a strong republican movement led to his leaving Spain in 1931. The new constitution declared Spain a workers' republic, broke up and state, and secularized the schools. Now the King of Spain is Juan Carlos I. He became King in November 1975 till now. His wife is Sophia of Greece and Denmark.