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
Indigenous peoples in Argentina and traders keep raising food prices. He also claimed judges would not even hear the native's complaints.<ref name="ASH/MB"></ref> According to the 2010 census there are the following indigenous groups: This region includes the provinces of Chaco, Corrientes, Entre Ríos, Formosa, Misiones, Santa Fe, and parts of Santiago del Estero Province. This region includes the provinces of Catamarca, Jujuy, La Rioja, Salta, San Juan, parts of Santiago del Estero Province, and Tucumán. This region includes the Autonomous City of Buenos Aires and the provinces of Buenos Aires, Córdoba, La Pampa, Mendoza, and San Luis. This region includes the provinces of Chubut,