How did the terror end and who took power as a result of the end of the violence?

Ended- In July 1794 Robespierre was arrested and executed as were many of his fellow Jacobins, thereby ending the Reign of Terror

2nd part of question- Maximilien Robespierre,

Explanation:

medieval theories about scientific reasoning differed greatly from the reason favored during the scientific revolution in that it relied heavily on a fear of an all-powerful god, instead of rational thinking and observation.