In the mid-17th century, France sent colonists to settle the island of Tortuga and the northwestern coast of Hispaniola (which the Spaniards had abandoned by 1606) due to its strategic position in the region. In order to entice the pirates, France supplied them with women who had been taken from prisons, accused of prostitution and thieving. After decades of armed struggles with the French settlers, Spain ceded the western coast of the island to France with the 1697 Treaty of Ryswick, whilst the Central Plateau remained under Spanish domain. France created a wealthy colony on the island, while the Spanish colony continued to suffer economic decline.