Mediterranean coastal region, North Africa. It extends from Egypt to the Atlantic Ocean. Once part of Roman Africa, the region was overrun by Vandals in the 5th century AD. Reconquered by the Eastern Roman Empire (Byzantine Empire) circa AD 533, it was overcome by Arabs during the 7th century and was eventually broken up into the independent Muslim polities known collectively as the Barbary states (Morocco, Algeria [Algiers], Tunisia [Tunis], and Libya [Tripoli]). For centuries the coast was notorious as a haven for pirates, who ravaged shipping and collected tribute from European states. After the U.S. war with Tripoli (see Tripolitan War), the U.S. expedition to Algiers (1815), and the bombardment of Algiers by the British (1816), the pirates ceased exacting tribute.
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"Barbary" was almost never a unified political entity, but five different warring tribes. From the sixteenth century onwards, it was divided into the familiar political entities of Morocco, Algiers, Tunis, and Tripolitania (Tripoli). Major rulers during the sweet times of the barbary states plundering parties were the Pasha or Dey of Algiers, the Bey of Tunis and the Bey of Tripoli, all very good subjects that were anxious to get rid of the Ottoman sultan, but de facto independent rulers. Before then it was usually divided between Ifriqiya, Morocco, and a west-central Algerian state centered on Tlemcen or Tiaret, although powerful dynasties such as the Almohads, and briefly the Hafsids, occasionally unified it for short periods. From a European perspective its "capital" or chief city was often considered to be Tripoli, in modern-day Libya, although Algiers, in Algeria, and Tangiers, in Morocco, were also sometimes seen as its "capital" by Europeans of the era.
The first United States military action overseas, executed by the U.S. Marines and Navy, was the Battle of Derne, Tripoli, in 1805, in an effort to destroy all of the Barbary pirates, free the American prisoners in captivity, and putting an end to piracy acts between these warring tribes on the part of the Barbary states. The opening line of the Marine's Hymn refers to this action:
From the halls of Montezuma to the shores of Tripoli
