Complex sentence: The conflict began as a series of terrorist attacks by the FLN against the French forces and civilians in Algiers, reprisals followed and the violence escalated leading the French Governor-General to deploy the French Army in Algiers to suppress the FLN.
Split into simpler sentences: The conflict began as a series of terrorist attacks by the FLN against the French forces and civilians in Algiers. Violence escalated when the French government deployed the French Army in Algiers to suppress the FLN.