As the Roman empire declined, the Suebi, Vandals and Alans each took control of part of Hispania. In the 5th century AD the Visigoths, a romanized germanic tribe, conquered all of Hispania and established a relatively stable kingdom lasting until 711, when it fell to an invasion by Islamic North African Moors and became part of the expanding Umayyad empire, under the name of Al-Andalus. When the Umayyad empire gave way to the Abbaside empire, an Umayyad exile established the Caliphate of Cordoba, effectively making Al-Andalus independent from the empire.
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 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.
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.
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.
Until 1714, Spain was a loose confederation of kingdoms and statelets, under the same king, until King Philip V removed the autonomous status of the Aragonese crown. Moreover, the creation of a unified state in the 19th and 20th centuries has lead to the present situation, apparently simple, but sometimes extremely confusing. During the Second Spanish Republic (1931-1936), the Basque and Catalan were given limited self-government, which was lost after the Spanish Civil War (1936-1939) and restored in 1978 during the transition to democracy.
The Napoleonic invasion gave the opportunity to the American colonies, led by Libertadores, to claim their independence. Between 1810 and 1824, Chile, Colombia, Ecuador, Venezuela, and the other colonies declared and won their independence. The only New World colonies Spain was left with were the islands of Cuba and Puerto Rico. The Allies fought Napoleon's forces in the Peninsular War, with Joseph Bonaparte ruling as king at Madrid. In 1812 the Cortes took refuge at Cádiz and created the first modern Spanish constitution, the Constitution of 1812 (informally named La Pepa).
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.
The crown jewel of Spain's next decade of infrastructure construction is the Spanish high speed rail network, Alta Velocidad Española AVE. Currently, an ambitious plan includes the construction of a 7000 km network, centered naturally on Madrid. The overall goal is to have all important provincial cities be no more than 4 hours away from Madrid, and no more than 6 hours away from Barcelona. Currently, AVE high-speed trains link Atocha station to Seville in the south and Lleida in the east (to be extended to Barcelona).
With the approval of the Spanish Constitution of 1978 and the arrival of democracy, the old historic nationalities — Basque Country, Catalonia, Galicia and Andalusia— were given far-reaching autonomy, which was then soon extended to all Spanish regions, resulting in one of the most decentralized territorial organizations in Western Europe.