Title: Official languages of Spain
Content:  Spanish (sometimes called Castilian) is the only official language of the entire country and is spoken habitually and as a native language among a vast majority of the Spanish population. Spain is, along with Colombia and after Mexico and the United States, ranked third in the world as the country with the most Spanish speakers. Spanish is the only official language in Asturias, Cantabria, La Rioja, Aragon, Castile and León, Madrid, Castilla-La Mancha, Extremadura, Andalusia, the Canary Islands and the region of Murcia, as well as Ceuta, Melilla, and half of Navarre. It is also co-official with other languages in Catalonia, Balearic Islands, Valencia, Galicia, Basque Country and the Basque zone of Navarre. In all of the bilingual autonomous communities, with the exception of 
Title: Spaniards
Content:   Languages spoken in Spain include Spanish (castellano or español) (74%), Catalan (català, called valencià, in the Valencian Community) (17%), Galician (galego) (7%), and Basque (euskara) (2%). Other languages with a lower level of official recognition are Asturian (asturianu), Aranese Gascon (aranés), Aragonese (aragonés), and Leonese, each with their own various dialects. Spanish is the official state language, although the other languages are co-official in a number of autonomous communities. Peninsular Spanish is typically classified in northern and southern dialects; among the southern ones Andalusian Spanish is particularly important. The Canary Islands have a distinct dialect of Spanish which is close to Caribbean Spanish. The Spanish language 
Title: Demographics of Spain
Content: Spanish 99% (88% mother tongue ) (official nationwide) ; Catalan 16% (9% mother tongue ) (co-official in Catalonia, Balearic Islands, and Valencia — see Valencian) ; Galician 7% (5% mother tongue ) (co-official in Galicia) ; Basque 1.6% (1% mother tongue ) (co-official in Basque Country and designated areas in Navarre). ; Aranese (a variant of Gascon Occitan) is co-official in Val d'Aran, a small valley in the Pyrenees. Asturian-Leonese (in the former Kingdom of León and Asturias) ; Aragonese (in the province of Huesca, Aragon) ; Arabic (in the autonomous city of Ceuta) ; Berber (in the autonomous city of Melilla)  Others with no official status:
Title: Languages of Spain
Content:  The languages of Spain (lenguas de España), or Spanish languages (lenguas españolas), are the languages spoken in Spain. Most languages spoken in Spain belong to the Romance language family, of which Spanish is the only language which has official status for the whole country. Various other languages have co-official or recognised status in specific territories, and a number of unofficial languages and dialects are spoken in certain localities.
Title: Languages of Spain
Content:  León and Zamora. In terms of the number of speakers and dominance, the most prominent of the languages of Spain is Spanish (Castilian), spoken by about 99% of Spaniards as a first or second language. According to a 2019 Pew Research survey, the most commonly spoken languages at home other than Spanish were Catalan in 8% of households, Valencian 4%, Galician 3% and Basque in 1% of homes. Distribution of the regional co-official languages in Spain: Spanish is official throughout the country; the rest of these languages have legal and co-official status in their respective communities and (except Aranese) are widespread enough to have daily newspapers and significant book publishing 
Title: List of countries where Spanish is an official language
Content:  Spanish is the official language (either by law or de facto) in 20 sovereign states and one dependent territory, totaling around 442 million people. It is additionally the main official language in Equatorial Guinea. In these countries and territories, Spanish is the main or mostly used language of communication of the vast majority of the population; official documents are written chiefly or solely in that language; and it is taught in schools and utilized as the primary medium of instruction as part of the official curriculum.
Title: Official languages of Spain
Content:  native languages or languages that are not native but used, 98.9% of the population speaks Spanish, 17.5% speaks Catalan, 6.2% speaks Galician, 5.8% speaks Valencian (a variety of Catalan) and 3.0% speaks Basque. For autonomous communities, Catalan can be used by almost 85% of the population of Catalonia and 63.1% of the Balearic region, Galician is used by 89% of Galicians, Valencian is used by 51.8% of the residents in that community and Basque is spoken by 55.1% of the Basque population and 21.7% of people in Navarre. With regard to native languages alone, Galician is the native language of 82.8% of Galicians, Catalan is the native language of 31.6% of people 
Title: Culture of Spain
Content:  Spain is a multilingual country with a relatively complex sociolinguistic situation. According to the article 3 of the 1978 Constitution, Spanish is the official language of the State, while other languages may also be official in autonomous communities according to the latter's regional statutes, as it is the case with Catalan/Valencian, Basque and Galician. Spanish, a Romance language, has become the hegemonic language in Spain. It has also become a global language (with the majority of its speakers now located outside of Spain, most of them in Latin America) and one of six official languages of the United Nations. Its current hegemony in Spain is subtly fostered by neoliberal discourses on educational choice, flexibility and competition. Another Romance language, Catalan 
Title: Spain
Content:   Spain is a multilingual state. Spanish—featured in the 1978 Spanish Constitution as castellano ('Castilian')—has effectively been the official language of the entire country since 1931. As allowed in the third article of the Constitution, the other 'Spanish languages' can also become official in their respective autonomous communities. The territoriality created by the form of co-officiality codified in the 1978 Constitution creates an asymmetry, in which Spanish speakers' rights apply to the entire territory whereas vis-à-vis the rest of co-official languages, their speakers' rights only apply in their territories. Besides Spanish, other territorialized languages include Aragonese, Aranese, Astur-Leonese, Basque, Ceutan Arabic (Darija), Catalan, Galician, Portuguese and Tamazight, to which the Romani Caló and 
Title: Spanish language
Content:  [[File:Knowledge of Spanish in European Union.svg|thumb|Percentage of people who self reportedly know enough Spanish to hold a conversation, in the EU, 2005 ]] In Europe, Spanish is an official language of Spain, the country after which it is named and from which it originated. It is also widely spoken in Gibraltar and Andorra. Spanish is also spoken by immigrant communities in other European countries, such as the United Kingdom, France, Italy, and Germany. Spanish is an official language of the European Union.

Question: what type of currency do they use in spain?
Answer: Euro.