The County of Tripoli was a medieval state established during the First Crusade in the early 12th century. It was located in present-day Lebanon and was one of the four main Crusader states in the region, alongside the Kingdom of Jerusalem, the County of Edessa, and the Principality of Antioch. The county was named after its capital, the city of Tripoli, which served as a significant port and trade center. The county was ruled by various counts, with the most notable being Bertrand of Tripoli and Raymond IV of Toulouse. It played a crucial role in the Crusader efforts to maintain control over the Holy Land. The County of Tripoli eventually fell to the Mamluks in the late 13th century, marking the decline of Crusader influence in the region.