The Romans conquered the Iberian Peninsula over 200 years, defeating the local Celts and Iberians. They introduced Roman culture, establishing cities with Roman infrastructure like aqueducts and amphitheaters. While some Iberians and Celts lived in the cities, most resided in the countryside, where they adopted Roman farming techniques and crops and exported goods. The Romans also brought their polytheistic religion, building temples and making sacrifices to gods like Jupiter.