Original: In 1920, during the Tours Congress, the majority and left wing of the party broke away and formed the French Section of the Communist International to join the Third International founded by Vladimir Lenin.
Simplified: In 1920, during the Tours Congress, the majority and left wing of the party broke away and formed the French Section of the Communist International (Section franÃ aise de l'Internationale Communiste or SFIC). This party joined the Third International, that was founded by Lenin.