Final answer:
Robespierre believed enemies of the French Republic should be suppressed with terror, leading to policies that resulted in mass imprisonments and executions during the Reign of Terror.
Step-by-step explanation:
Maximilien Robespierre believed that enemies of the republic should be dealt with through swift and severe measures. During the Reign of Terror, under the authority of the Committee of Public Safety, Robespierre enforced a series of policies intended to eliminate both internal and external threats to the revolutionary French Republic. This included the enactment of the Law of Suspects and the Law of 22 Prairial, which led to mass imprisonments and widespread use of the guillotine for executions, including those of perceived political opponents, aristocrats, and others who were accused of being against the state's revolutionary ideals. Robespierre articulated that enemies must be suppressed by terror to ensure the survival of republican principles.