Marxist Unification Movement (in Catalan

Catalan language

Catalan is a Romance language, the national and only official language of Andorra and a co-official language in the Spanish autonomous communities of Catalonia, the Balearic Islands and Valencian Community, where it is known as Valencian , as well as in the city of Alghero, on the Italian island...

: Moviment d'Unificació Marxista) was a political group in Catalonia

Catalonia

Catalonia is an autonomous community in northeastern Spain, with the official status of a "nationality" of Spain. Catalonia comprises four provinces: Barcelona, Girona, Lleida, and Tarragona. Its capital and largest city is Barcelona. Catalonia covers an area of 32,114 km² and has an...

, Spain

Spain

Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

. MUM was founded in 1977, during the Spanish transition to democracy

Spanish transition to democracy

The Spanish transition to democracy was the era when Spain moved from the dictatorship of Francisco Franco to a liberal democratic state. The transition is usually said to have begun with Franco’s death on 20 November 1975, while its completion has been variously said to be marked by the Spanish...

, by a group that had left the Socialist Party of National Liberation of the Catalan Countries (PSAN) in 1976 and the Col·lectiu Combat, a splinter-group of the Catalan National Front (FNC).

MUM differed from other radical Catalan separatists

Separatism

Separatism is the advocacy of a state of cultural, ethnic, tribal, religious, racial, governmental or gender separation from the larger group. While it often refers to full political secession, separatist groups may seek nothing more than greater autonomy...

 in its willingness to participate in the Spanish electoral process. In the 1977 elections

Spanish general election, 1977

The Spanish general election of 1977 took place on 15 June 1977. It was the first election since the death of Francisco Franco.Voting was on the basis of universal suffrage in a secret ballot. The elections were held using closed list proportional representation in 52 electoral districts...

, MUM formed part of the Popular Unity Candidature for Socialism (Candidatura d'Unitat Popular cap el Socialisme), which launched Salvador Casanova as its main candidate. After the elections, MUM merged with the Party of Labour of Catalonia

Party of Labour of Catalonia

Party of Labour of Catalonia was a communist party in Catalonia, Spain. PTC was formed in 1979 following a split from the Party of Labour of Spain . The leader of PTC was Joan Sánchez Carreté....

 (PTC) and formed the Catalan Workers Bloc

Catalan Workers Bloc

Catalan Workers Bloc was a political party in Catalonia, Spain. Formed in 1978 through the merger of the Party of Labour of Catalonia and the Marxist Unification Movement...

(BCT).