The two main Catalan nationalist parties (ERC and PDECAT) have shown their commitment to the idea of the Catalan Countries in different ways and with different intensities. For the former CiU (from which the PDECAT stems), this issue was not among the main items in their agenda. Nevertheless, CiU has enjoyed a long-term collaboration with the Valencian party BNV and with the Majorcan parties UM and the Socialist Party of Majorca (PSM). In contrast, Republican Left of Catalonia (ERC) has taken more substantial steps in that direction by expanding the party to Roussillon, Balearic Islands and—as Republican Left of the Valencian Country (ERPV)—the Valencian Community.