Why was maximilien de robespierre executed?

Maximilien de Robespierre was executed because of the things he did during his lifetime. He was an important figure during the French Revolution, as well as the Reign of Terror, which was a time of extreme violence then. Robespierre executed many opponents himself, which is something that was easy for him to do given his important role in the society. Because of his evil doings, he was ultimately executed himself, being the one who instigated the Reign of Terror.