sentences:  Historically, the CNT has also been affiliated with the Federación Anarquista Ibérica (); thus, it has also been referred to as the CNT-FAI.Throughout its history, it has played a major role in the Spanish labor movement.Founded in 1910 in Barcelona from groups brought together by the trade union "Solidaridad Obrera", it significantly expanded the role of anarchism in Spain, which can be traced to the creation of the "Federación de Trabajadores de la Región Española", the successor organization to the Spanish chapter of the IWA.