(See NIGERIA: History; and SoKoTo.) Consult the Travels of Heinrich Barth (new ed., London, 1890); Hausaland, by C. H.
Robinson, Hausaland (London, 1896); S.
These states and Sokoto itself, known variously as the Sokoto or Fula empire and Hausaland, came (c. 1900-1903) under direct British control, but the native governments are maintained.
On the break up of the Songhoi empire the north-eastern part of Hausaland became more or less subject to Bornu, whose sultans in the 17th century claimed to rule over Katsena and Kano.
Robinson, Hausaland (London, 1896); The Annual Reports on Northern Nigeria, issued since 1900 by the Colonial Office, London; Sir F.