This history has been well understood from the written record, and was confirmed in 2009 by the only genetic survey of Bermuda, which looked exclusively at the black population of St. David's Island (as the purpose of the study was to seek Native American haplogroups, which could be assumed to be absent from the white population) consequently showed that the African ancestry of black Bermudians (other than those resulting from recent immigration from the British West Indian islands) is largely from a band across southern Africa, from Angola to Mozambique, which is similar to what is revealed in Latin America, but distinctly different from the blacks of the British West Indies and the United States.