Costaba

Costaba refers to a historical region in what is now modern-day Spain. It was a significant administrative and geographical entity during various periods of Iberian history, particularly under Roman and later Visigothic rule. The name itself is believed to derive from the Roman name "Conco" or "Concoiba," which was later Latinized and evolved into "Costaba."

The territory of Costaba encompassed areas that are now part of Catalonia and Aragon. Its strategic importance stemmed from its location, controlling trade routes and fertile agricultural lands. During Roman times, it was a part of Tarraconensis, a Roman province. Following the decline of Roman authority, Costaba continued to exist as a distinct region under Visigothic dominion.

The precise boundaries of Costaba fluctuated over time and depending on the ruling power. However, it generally included the lower Ebro River valley and coastal areas. The region played a role in the formation of early medieval kingdoms and lordships in the Iberian Peninsula. While the name Costaba eventually faded from common usage as political and administrative structures evolved, its historical significance is recognized by historians studying the early medieval period of Spain. Understanding Costaba provides insight into the territorial organization and political landscape of the region before the full establishment of the Reconquista.