Benin was the seat of one of the great medieval African kingdoms called Dahomey. Europeans began arriving in the area in the 18th century, as the kingdom of Dahomey was expanding its territory. The Portuguese, the French, and the Dutch established trading posts along the coast (Porto-Novo, Ouidah, Cotonou), and traded weapons for slaves. Slave trade ended in 1848. Then, the French signed treaties with Kings of Abomey (Guezo, Toffa, Glele) to establish French protectorates in the main cities and ports. However, King Behanzin fought the French influence, which cost him deportation to Martinique. As of 1900, the territory became a French colony ruled by a French Governor. Expansion continued to the North (kingdoms of Parakou, Nikki, Kandi), up to the border with former Upper Volta. On December 4, 1958, it became the Republique du Dahomey, self-governing within the French community, and on August 1, 1960, the Republic of Benin gained full independence from France.