Phoenicians, Greeks, Carthaginians, Celts, and more have occupied Spain in the last couple of centuries. The Romans fought the Carthaginians for over 200 years and succeeded, however, the empire collapsed in the 5th century. It was ultimately conquered by Arab invaders known as Moors. Spain had flourished in art and architecture from all these periods and cultural diversity was prominent as a result of these conquests. The Golden Age lasted until the 16th century when notable art and literature periods were produced. Spain is currently a constitutional monarchy.