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.
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 first governments of the Republic, were center-left, headed by Niceto Alcalá-Zamora, and Manuel Azaña. In 1933, the right-wing CEDA won power; an armed rising of workers of October 1934, which reached its greatest intensity in Asturias and Catalonia, was forcefully put down by the CEDA government.
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.
In 1898 Spain lost the Spanish-American War. Cuba gained its independence, and Spain lost its remaining New World colonies—Guam, the Philippines, and Puerto Rico—to the United States. Spain's colonial possessions were reduced to Spanish Morocco, Western Sahara and Equatorial Guinea.
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.
Modern Spain began to take form during the Reconquista, the struggle between the Christian kingdoms arising in the northern regions left unconquered by the Moors and the Muslim kingdoms into which Al-Andalus eventually split.
The 20th century initially brought little peace; colonisation of Western Sahara, Spanish Morocco and Equatorial Guinea was attempted as a substitute for the loss of the Americas. A period of dictatorial rule (1923-1931) ended with the establishment of the Second Spanish Republic. The Republic offered political autonomy to the Basque Country and Catalonia and gave voting rights to women. However, with increasing political polarisation and pressure from all sides, coupled with growing and unchecked political violence, the Republic ended with the outbreak of the Spanish Civil War in July 1936. Following the victory of the nationalist forces in 1939, General Francisco Franco ruled a nation exhausted politically and economically until his death in 1975.
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.
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.
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.
Mistreatment of the Moorish population in Morocco led to an uprising and the loss of all North African possessions except for the enclaves of Ceuta and Melilla in 1921. Abd el-Krim, Annual. In order to avoid accountability, the king Alfonso XIII decided to support the dictatorship of general Miguel Primo de Rivera.