Sierra Leone trade. At about the same time (following the abolition of the slave trade in 1807), Royal Navy crews delivered thousands of formerly enslaved Africans to Freetown, after liberating them from illegal slave ships. These Liberated Africans or recaptives were sold for $20 a head as apprentices to the white settlers, Nova Scotian Settlers, and the Jamaican Maroons. Many Liberated Africans were treated poorly and even abused because some of the original settlers considered them their property. Cut off from their various homelands and traditions, the Liberated Africans were forced to assimilate to the Western styles of Settlers and Maroons. For example, some of the Liberated Africans were forced to change their name to a more Western sounding one. Though some people happily embraced these changes because they considered it as being part of the community, some were not happy with these changes and wanted to keep their own identity. Many Liberated Africans were so unhappy that they risked the possibility of being sold back into slavery by leaving Sierra Leone and going back to their original villages. The Liberated Africans eventually modified their customs to adopt those of the Nova Scotians, Maroons and Europeans, yet kept some of their ethnic traditions. As the Liberated Africans became successful traders and spread Christianity throughout West Africa, they intermarried with the Nova Scotians and Maroons, and the two groups eventually became a fusion of African and Western societies. These Liberated Africans were from many areas of Africa, but principally the west coast. During the 19th century, freed African Americans, some Americo Liberian "refugees", and particularly Afro-Caribbeans, mainly Jamaican Maroons, also immigrated and settled in Freetown. Together these peoples formed the Krio ethnicity and an English-based creole language, (Krio), which is the lingua franca and de facto national language used among many of the ethnicities in the country. Colonial era (1800–1961) The settlement of Sierra Leone in the 1800s was unique in that the population was composed of displaced Africans who were brought to the colony after the British abolition of the slave trade in 1807. Upon arrival in Sierra Leone, each recaptive was given a registration number, and information on their physical qualities would be entered into the Register of Liberated Africans. Oftentimes the documentation would be overwhelmingly subjective and would result in inaccurate entries, making them difficult to track. In addition, differences between the Register of Liberated Africans of 1808