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The '''National Renewal Alliance''' (in portuguese: ''Aliança Renovadora Nacional'', '''ARENA''') was a [[political party]] of [[neo-conservative]] orientation that existed during the [[two-party]] system of the [[Brazilian military regime]]. On 27 October 1965, President [[Humberto de Alencar Castelo Branco]] created the Institutional Act Number 2, which extinguished the [[multi-party]] system and reduced the Brazilian political to two parties<ref name="2party">Schilling, Voltaire. [http://educaterra.terra.com.br/voltaire/brasil/2003/08/18/001.htm The bipartisanship during the military regime], Terra - Visited on 25/09/2010.</ref>, one to give support to the current government (ARENA) and the other to house the [[opposition]] ([[Brazilian Democratic Movement]], current PMDB)<ref name="2party">Schilling, Voltaire. [http://educaterra.terra.com.br/voltaire/brasil/2003/08/18/001.htm The bipartisanship during the military regime], Terra - Visited on 25/09/2010.</ref>.

The '''National Renewal Alliance''' (in portuguese: ''Aliança Renovadora Nacional'', '''ARENA''') was a [[political party]] of [[neo-conservative]] orientation that existed during the [[two-party]] system of the [[Brazilian military regime]]. On 27 October 1965, President [[Humberto de Alencar Castelo Branco]] created the Institutional Act Number 2, which extinguished the [[multi-party]] system and reduced the Brazilian political to two parties,<ref name="2party">Schilling, Voltaire. [http://educaterra.terra.com.br/voltaire/brasil/2003/08/18/001.htm The bipartisanship during the military regime], Terra - Visited on 25/09/2010.</ref> one to give support to the current government (ARENA) and the other to house the [[opposition]] ([[Brazilian Democratic Movement]], current PMDB).<ref name="2party"/>

With the return of [[multi-party]] system<ref>[http://legis.senado.gov.br/legislacao/ListaPublicacoes.action?id=125767 Law No. 6.767, of December 20, 1979]</ref>, the ARENA changed its name to [[Social Democratic Party]] (PDS)<ref>Digital almanac of Folha de S. Paulo</ref>, during the rule of the last President of the regime, [[João Figueiredo]]. It was also created within the party, the [[Liberal Front Party|Liberal Front]], a wing which claimed [[limited government]] and [[economic freedom]]. After Figueiredo government, the wing became the [[Liberal Front Party]], current [[Democrats (Brazil)|Democrats]]<ref>Almanaque Abril - 1987. 13th edition. São Paulo, April, 1987</ref>.

With the return of [[multi-party]] system,<ref>[http://legis.senado.gov.br/legislacao/ListaPublicacoes.action?id=125767 Law No. 6.767, of December 20, 1979]</ref> the ARENA changed its name to [[Social Democratic Party]] (PDS),<ref>Digital almanac of Folha de S. Paulo</ref> during the rule of the last President of the regime, [[João Figueiredo]]. It was also created within the party, the [[Liberal Front Party|Liberal Front]], a wing which claimed [[limited government]] and [[economic freedom]]. After Figueiredo government, the wing became the [[Liberal Front Party]], current [[Democrats (Brazil)|Democrats]].<ref>Almanaque Abril - 1987. 13th edition. São Paulo, April, 1987</ref>  

In 1993, the PDS merged with the [[Christian Democratic Party]] (PDC) to form the [[Progressive Party (Brazil)|Progressive Reform Party]] (PPR). In the same year, in a merger of other smaller labels, the [[Progressive Party]] was created. In 1995, PPR merged the PP and created the [[Brazilian Progressive Party]], which supported the [[libertarian]] reforms proposed by the then [[social democracy|Social Democrat]] President [[Fernando Henrique Cardoso]].

In 1993, the PDS merged with the [[Christian Democratic Party]] (PDC) to form the [[Progressive Party (Brazil)|Progressive Reform Party]] (PPR). In the same year, in a merger of other smaller labels, the [[Progressive Party]] was created. In 1995, PPR merged the PP and created the [[Brazilian Progressive Party]], which supported the [[libertarian]] reforms proposed by the then [[social democracy|Social Democrat]] President [[Fernando Henrique Cardoso]].