Senate federal level. Similarly in Argentina, in addition to the Senate at federal level, eight of the country's provinces, Buenos Aires, Catamarca, Corrientes, Entre Ríos, Mendoza, Salta, San Luis (since 1987) and Santa Fe, have bicameral legislatures with a Senate. Córdoba and Tucumán changed to unicameral systems in 2001 and 2003 respectively. In Australia and Canada, only the upper house of the federal parliament is known as the Senate. All Australian states other than Queensland have an upper house known as a Legislative council. Several Canadian provinces also once had a Legislative Council, but these have all been abolished, the last
Provinces of South Africa South Africa, and although this independence was never acknowledged by any other country, three other homelands Bophuthatswana (1977), Venda (1979) and Ciskei (1981) followed suit. On 27 April 1994, the date of the first non-racial elections and of the adoption of the Interim Constitution, all of these provinces and homelands were dissolved, and nine new provinces were established. The boundaries of these provinces were established in 1993 by a "Commission on the Demarcation/Delimitation of Regions" created by CODESA, and were broadly based on "planning regions" demarcated by the Development Bank of Southern Africa in the 1980s, and amalgamated from existing