The Spaniards of Spain, numbering approximately 31,920,000 people, are Engaged yet Unreached. They are described as a Southern European people whose culture has been shaped by the interaction of Iberian, Roman, Visigothic, Islamic, Jewish, and Christian traditions, as well as centuries of regional development within the Iberian Peninsula They are an Indigenous people, with Spaniard as their ethnic/kinship group and are in the Spanish people cluster of the Eurasian Peoples. They mostly adhere to Roman Catholicism and Spanish is their primary language.