Robespierre's rule in France was known as the "Reign of Terror" because

Robespierre's rule in France was known as the "Reign of Terror" because it was the phase of the French Revolution more violent and radical. The mark of this phase was the elimination of all enemies or opponents. Robespierre was the leader of the Jacobins (small entrepreneurs and liberal professionals) and with great participation of the poorest sections of the population, the phase lasted from 1792 to 1794.