Socialist Party of National Liberation

Initially it was only present the Catalonia, but later also gained presence in the French region of Roussillon (September 1971), the Valencian Community (July 1974) and the Balearic Islands (February 1976).

Joaquim Maurín, Jaume Vicens i Vives and the classical international marxist authors were the most important theoretical inspirations the party.

The Basque organization Euskadi Ta Askatasuna (ETA) and the Galician People's Union (UPG) were also references, both in theory and practice.

At the same time, in December 1969 they were invited to join the Council of Political Forces of Catalonia, but they refused because of the Burgeois and moderate character of this body.

The same year Socialist Independentist Action of Catalonia (ASIC), led by Fèlix Cucurull, a small group but with experienced militants.

They also maintained contacts with Esquerra Catalana dels Treballadors (ECT), the Valencian Socialist Party (PSV), Germania Socialista and the Comité Rossellonès d'Estudis i d'Acció (CREA).

The PSAN also supported the militants of the Catalan Liberation Front (FAC), that were jailed or were being tried, but criticized the lack of serious political content in that organization.

After the Second Plenary Session of the Assembly of Catalonia in 1973, the PSAN politically confronted the PSUC and OCE-Bandera Roja, accusing them of being Spanish nationalists.

In August 1973, the PSAN establishes a cell in Prada de Conflent, in the French department of Pyrénées-Orientales and gained presence in the city of València in 1974, the party being joined by people that would become very important members in the future: Josep Guia, Gonçal Castelló or Manuel Tarín among them.

In the elections of 1977, the first democratic ones since 1936, the party created the Popular Unity Candidature for Socialism (CUPS), in coalition with the Marxist Unification Movement and the PSAN-P, that gained 12.040 votes (the 0.4% of the total in Catalonia).

In 1989 the PSAN joined Catalunya Lliure, an electoral coalition formed by the National Front of Catalonia, the MDT-FP and Maulets.