in October 1847, the ephemeral governments ended until 1851. His Council of Ministers carried out important reforms in the Administration and the Treasury, but the most important was to confront and dominate the events of 1848. The revolutions of this year affected Spain in a limited way thanks to the iron hand of the Council, coming to call it a "necessary dictatorship" since the government ruled with the Cortes dissolved and the constitutional guarantees suspended. In the winter of 1851, Juan Bravo Murillo became President of the Council of Ministers, forming a council with a remarkable technical training devoted in depth to the art of government and administration, moving away from the military rather than political government of General Narváez. This Council carried out an important economic sanitation; prepared a new administration reform; and normalized relations with the Holy See through the Concordat of 1851. But, undoubtedly, the task with more resonance was the preparation of a draft constitutional reform, however this suffered the rejection of progressive deputies, most of the moderates and the Queen Mother herself, who still had great influence on her daughter. All this ended up causing the resignation of the government in December 1852. With the fall of the Bravo Murillo government, political instability and ephemeral governments returned, lasting until the fall of the First Republic in 1874. The Restoration After the dethronement of Isabella II, the debates on the form of State, the regency of Serrano (1869-1871), the brief reign of Amadeo I (1871-1873), the republican experience (1873-1873) and the Serrano dictatorship (1874), a military coup took place and the Bourbon restoration started with Alfonso XII, son of Queen Isabella II, as King of Spain. During this period the Constitution of 1876 was approved, a constitution sufficiently flexible so that all the ideologies coexisted under it and could make the necessary changes in favor of one or another ideology without altering the system. This constitution gave sovereignty to both the Monarch and the Cortes, returning to the principle that the Government should have the confidence of both the Crown and Parliament. Thanks to this flexibility, a two-party system is installed in Spain, which derives from the so-called between Cánovas and Sagasta agreed at El Pardo Palace, through which the liberal and conservative parties took turns in power. For politicians of the time, the need for stability allowed not necessarily attend the will of the electoral