sentences:  Along with the Liberal Alliance, it was one of the two parties of the bipartidist system of that time.Between 1920 and 1925 it took as name National Union and during that period it was formed by the Conservative Party, the unionist liberals, the nationals and the liberal democrats.Number of parliament members and senators
  
  "The original version of this article draws heavily on the in the Spanish-language Wikipedia, which was accessed in the version of 8 June 2007."