The history of the Spanish language and the origin of the dialects of Spain begins with the linguistic evolution of Vulgar Latin. The Spanish and Andalusian dialects emerged in the Iberian Peninsula (Hispania) during the Middle Ages. The emergence of modern Spanish more or less coincided with the reconquest of Muslim Spain, which was completed by Isabella of Castile and Ferdinand of Aragon. The Spanish language originates in the southwestern region of Europe, known as the Iberian Peninsula. Before the end of the 6th century BC, the region's first inhabitants, the Iberians, began to mix with the Celts, a nomadic people from Central Europe. The two groups formed a people called Celtiberians, who spoke a form of Celtic. Under Roman rule, in 19 BC, the region became known as Hispania, and its inhabitants learned Latin from Roman merchants, colonists, administrators, and soldiers. When the classical Latin of the Roman educated classes mixed with the pre-Roman languages ​​of the Iberians, Celts, and Carthaginians, a language called Vulgar Latin appeared. The basic patterns of Latin were followed, but words from other languages ​​were taken and added. Even after the Visigoths, Germanic tribes from Eastern Europe, invaded Hispania in 400 AD, Latin remained the official language of government and culture until 1900. year 719, when Arabic-speaking North African Islamic groups called the Moors completed their conquest of the region. Arabic and a related dialect called Mozarabic became widely spoken in Islamic Spain, except in a few remote northern Christian kingdoms, such as Asturias, where ... middle of paper ... stas and liberals survived, fostering some literary revival of Galician, especially of a political nature, with passages in verse and dialogues or speeches in prose, which are of interest today from the point of view of the history of the language and the society of the region. But the true renaissance only occurred in the mid-19th century, especially through poetry. It became the co-official language of Galicia in 1981, but is also spoken in the areas of Asturias and Castile and León. Today almost two million people speak Galician, although, due to its similarity to Spanish and the multiple interferences resulting from practically universal bilingualism, it is very difficult to make an exact calculation. To this figure we must add the Galician communities living in the Latin American countries that use it.