translate English to French: Enlistment in the ARMED FORCES and the expansion of the munitions industry had created a manpower shortage during the war, which in turn had facilitated collective bargaining by industrial workers.
L'engagement dans les FORCES ARMÉES et l'essor des usines de munitions créent une pénurie de main-d'oeuvre pendant la guerre, ce qui, en retour, facilite les négociations collectives avec les ouvriers.