Roman Catholicism is, by far, the most popular religion in the country, with four in five Spaniards (80%) self-identifying as Catholics. The next group (one in eight, or 12%) is represented by atheists or agnostics. Minority religions account for one in seventy (1.4%) of all Spaniards.
After World War II, being one of few surviving fascist regimes in Europe, Spain was politically and economically isolated and was kept out of the United Nations until 1955, when it became strategically important for U.S. president Eisenhower to establish a military presence in the Iberian peninsula. This opening to Spain was aided by Franco's rabid anti-communism.
Over the past thirty years, Spain has become a more secularised society. The number of believers has decreased significantly and for those who believe the degree of accordance and practice to their church is quite diverse.
Contemporary Madrid came into its own after the death of the Fascist dictator Franco. Years of the Franco regime left Madrid and much the country in economic shambles due to isolation. With his death, Madrid and Spain as a whole began to re-assert itself on the international stage. Within Spain, reaction against the dictatorial bureaucracy centered in Madrid and a history of centralism that pre-dated Franco by centuries has resulted in the successful modern movement towards increased autonomy for the regions of Spain, considered as European regions, under the umbrella of Spain.
Historically, various regions of Spain had quite distinct regional dress. Today, most people in Spain dress in a manner comparable to most other contemporary Europeans, although some regional variations persist. Dress in Extremadura and in the smaller cities of Castile remains relatively austere, even on festive occasions, while Andaluz dress on festive occasions is elaborate and ostentatious. Barcelona is one of the most stylish cities in Europe, though more restrained and with a more determinedly timeless style than Paris or Milan.
A revived movement for the Christian unification of Spain was capitalized on by the "Catholic monarchs" (Reyes Católicos in Spanish) Isabel I of Castilla and Fernando II of Aragón in order to justify their invasion of Granada, the expulsion of the Jews and the forceful conversion of the Moors. In the 15th century, the Kingdoms of Castile and Aragon were united under Isabel and Fernando. These two able rulers ruled jointly and worked to consolidate the power of the monarchy at the expense of the nobility. During their reign, the castles of many nobles (symbols of aristocratic independence from the monarchy) were demolished, and a system of regular taxation was established. Fernando and Isabel established the basis for the unification of Spain religiously as well as politically and economically.
In 1499, about 50,000 Moors in Granada were coerced by Cardinal Cisneros into mass baptisms and conversion. During the uprising that followed (known as the First Rebellion of the Alpujarras), people who refused the choices of baptism or deportation to Africa, were systematically eliminated. What followed was a mass flee of Moors, Jews and Gitanos from Granada city and the villages to the mountain regions (and their hills) and the rural country, however by 1500 Cisneros reported that "There is now no one in the city who is not a Christian, and all the mosques are churches".
Spain is a constitutional monarchy, with a hereditary monarch and a bicameral parliament, the Cortes Generales or National Assembly. The executive branch consists of a Council of Ministers presided over by the President of Government (comparable to a prime minister), proposed by the monarch and elected by the National Assembly following legislative elections.
Under the Bonaparte, Spain failed to embrace the mercantile and industrial revolutions of the 18th century, and also failed to absorb the ideals that of the Enlightenment that were revolutionizing European thought. These missed opportunities, combined with the economic failures of the 17th century, caused the country to fall desperately behind Britain, France, and Germany in economic and political power.
The original peoples of the Iberian peninsula (in the sense that they are not known to have come from elsewhere), consisting of a number of separate tribes, are given the generic name of Iberians. This may have included the Basques, the only pre-Celtic people in Iberia surviving to the present day as a separate ethnic group. The most important culture of this period is that of the city of Tartessos. Beginning in the 9th century BC, Celtic tribes entered the Iberian peninsula through the Pyrenees and settled throughout the peninsula, becoming the Celt-Iberians.
The latter years of Franco's rule saw some economic and political liberalization, the so-called Spanish Miracle, including the birth of a tourism industry. Francisco Franco ruled until his death on November 20th 1975 when control was given to King Juan Carlos. In the last few months before Franco's death, the Spanish state went into a paralysis. This was capitalized upon by King Hassan of Morocco, who ordered the 'Green March' into Western Sahara, Spain's last colonial possession.