In order to understand the political forces and debates in Spain we have to consider two dimensions: the Right vs. Left dimension and the Nation State vs. Plurinational State dimension. The political parties agendas and the individual citizens opinions can only understood when situated on both dimensions. The Constitution of the Kingdom of Spain states that 1) it is a Nation and 2) that it is formed by Nationalities and Regions. This statement is a contradiction (since Nationality and Nation essentially mean the same thing in political theory), but it was an agreement that struck a balance between the political parties advocating the nation state and those advocating the plurinational state. The territorial organization of Spain into Autonomous Communities of Spain is the administrative realization of this constitutional balancing act.
Philip V, the first Bourbon king, of French origin, signed the Decreto de Nueva Planta in 1715, a new law that revoked most of the historical rights and privileges of the different kingdoms that conformed the Spanish Crown, unifying them under the laws of Castile, where the Cortes had been more receptive to the royal wish. Spain became culturally and politically a follower of France. The rule of the Spanish Bourbons continued under Ferdinand VI and Charles III. His son Carlos IV was truly incompetent (some say mentally handicapped), and under his reign Spain fell to the armies of Napoleon.
At present, Spain is a constitutional monarchy, and is comprised of 17 autonomous communities. One of the most important problems facing Spain today is ETA's terrorism - this illegal organization defends Basque independence through violent means, which is condemned by both Central and Basque government, although there is tension between these governments since PNV (the party presently governing Basque Country) longs for greater autonomy from Spain, including the possibility of independence, something Spanish government doesn't accept.
The most important minority group in the country are the Gitanos. Other indigenous minorities are Mercheros (or Quinquis) and Vaqueiros de alzada.- The latter, meaning "Mountain cow-breeders" dwell in mountain ranges in the Principality of Asturias and have kept historically apart from the valley dwellers. Foreign minorities include South Americans from countries like Argentina, Ecuador or Colombia; black Africans; Arabs and Berbers mainly from Morocco and other countries of North Africa; and Asians from China, Japan, Korea, and Vietnam.
Spain remained officially neutral in World Wars I and II, but suffered through a devastating Civil War (1936-39). During Franco's rule, Spain remained largely economically and culturally isolated from the outside world, but slowly began to catch up economically with its European neighbors. Under Franco, Spain actively sought the return of Gibraltar by the UK, and gained some support for its cause at the United Nations. During the 1960s, Spain began imposing restrictions on Gibraltar, culminating in the closure of the border in 1969. It was not fully reopened until 1985.
Spain suffered a shocking terrorist attack, the March 11, 2004 Madrid attacks on its capital's commuter train network, killing 200. Al-Qaeda has been blamed for this attack. Some have attributed the fall of the Aznar government to this attack, which took place just two days before the 2004 elections. At first the public believed ETA was responsible for the bombing. When they learned Al-Qaeda was the true culprit, many voters lashed out at the media and Aznar's government, believing the two had colluded to deceive the public.
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.
In 711, Arabs and Berbers had converted to Islam, a religion founded in the 7th century by prophet Muhammad and which by the 8th dominated all the north of Africa. A raiding party led by Tariq ibn-Ziyad was sent to intervene in a civil war in the Visigothic kingdoms in Iberia. Crossing the Strait of Gibraltar, it won a decisive victory in the summer of 711 when the Visigoth king Roderic was defeated and killed on July 19th at the Battle of Guadalete. Tariq's commander, Musa bin Nusair quickly crossed with substantial reinforcements, and by 718 the Muslims dominated most of the peninsula. The advance into Europe was stopped by the Franks under Charles Martel at the battle of Poitiers (France) in 732.
The period of Visigothic rule saw the spread of Arianism briefly in Spain. In 587, Reccared, the Visigothic king at Toledo, having been converted to Catholicism put an end to dissension on the question of Arianism and launched a movement in Spain to unify the various religious doctrines that existed in the land. The Council of Lerida in 546 constrained the clergy and extended the power of law over them under the blessings of Rome.
According to the latest official poll, 80% of Spaniards self-identify as Catholic, 12% as non-believer, and 1% as other (the remaining 7% declined to state). Of the 1.4% identifying as other, 29% identified as Evangelical Christian, 26% as Jehovah's Witnesses and 3% as Muslim (the rest either mentioned smaller religions or declined to state). According to the same poll, 73% believe in God, 14% don't and 12% are unsure (1% declined to state). Additionally, according to this poll, only 41% believe in Heaven. 24% of the Spaniards think that the Bible is just a fable. Only 25% of Catholics go to church at least once a week.
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.
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.
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.
Spain was part of the Roman Empire and many areas of Spain retain significant Roman architectural remnants. The Roman aqueduct at Segovia is still in use as of 2004; Mérida, now the Extermaduran capital but once the capital of the Roman province of Lusitania, retains over 5 miles of its Roman aqueduct, Roman bridge over the River Guadiana, an arch of Trajan, and significant remnants of a Roman forum, amphitheatre, and a temple popularly accounted to have been dedicated to Diana (goddess). Another Roman bridge crosses the Tagus River at Alcántara. Lesser Roman ruins can be found in the heart of Barcelona.