sentences:  The Three-Parties Alliance was succeeded in government by the Third Force, which comprised the Democratic and Socialist Union of the Resistance (UDSR), the SFIO and the MRP, with the Gaullists and the Communists forming the opposition.After the liberation of France, the Vichy government was dissolved and the Provisional Government of the French Republic (GPRF) was instituted.With most of the political class discredited, and containing many members who had more or less collaborated with the enemy, Gaullism and Communism became the most popular political forces in France.