The group that founded the PRTC was inspired by Marxism-Leninism, Che Guevara and the experiences of the Vietnamese national liberation struggle.

Clandestine pre-congress meetings for the founding of PRTC were held in Costa Rica, Honduras and El Salvador in 1975.

In December 1975 the plenary session of the party congress was opened with delegates from around Central America.

[1] During the period of 1976-1978, the party built up organizational structures throughout Central America with the exception of Nicaragua.

The congress elected Dr. José María Reyes Mata as the new General Secretary of the party.

The peasant sector of the Liberation League was converted into a separate organization, Brigadas de Trabajadores del Campo (BTC).

The People’s Liberation Movement (MLP) was formed as an umbrella body of the mass organizations of the party.