Final answer:
The predominant religion in Spain is Roman Catholicism.
Step-by-step explanation:
The predominant religion in Spain is Roman Catholicism. Spain has a long history of Catholic influence, dating back to the Reconquista, a period of Christian reconquest in the late Middle Ages.
The Catholic Church has played a significant role in shaping Spain's culture, traditions, and institutions. It has influenced art, architecture, literature, and even daily life.
While Roman Catholicism is the predominant religion in Spain, the country is also home to other religious minorities, including Muslims, Jews, and Protestants.
Learn more about Religion in Spain