He would hold the position of Minister of the Interior and Minister of Justice over the next fifteen years. In 1907, he ran for and won the position of Mayor of Madrid. In 1910, he entered the Academy of Moral and Political Sciences. Later that year, he became Prime Minister of Spain for the first time as a conservative government. He left that position in 1915, but would return for a short while in 1917. He moved to the position of Minister of State until 1920, when he formed the government as Prime Minister again. He was assassinated as he left the parliament building in Madrid.
He was a member of the Permanent Court in The Hague (he became vice-president in 1913), member of the International Law Institute, administrator of the bank firm 'Banco Hipotecario' and president of the National Institute of Social Security, the Council of Public Instruction and the Academy of Jurisprudence and Legislation. The King bestowed the County of Dato on him. He also got the following decorations: the chain of the Order of Carlos III and the Cross of St Gregorio Magno y Casto de Portugal.
They in turn assassinated prominent leaders of the right, most notably Prime Minister EDUARDODATO (March 1921).
In addition, Spanish attempts to establish control over the RIF (nominally Spanish since 1906/11) resulted in a disastrous defeat at ANNUAL (a force of 20,000 Spaniards was routed, among the estimated 12,000 dead commander Gen. FERNANDEZ SILVESTRE) at the hands of ABD EL KRIM in 1921.
Biography of EduardoDatoIradier, from Base documental d'Historia Contemporania de Catalunya, in Spanish