Final answer:
The French Revolutionaries during the Reign of Terror aimed to change Religious practices and the existing Political structures, reflecting their Enlightenment ideals.
Step-by-step explanation:
During the Reign of Terror, the French Revolutionaries decided to change Religious practices and Political structures. They focused on Enlightenment ideals, promoting reason and virtue. They attempted to dechristianize France, turning Notre Dame into a 'temple of reason,' and introduced a republican calendar to replace the Gregorian one, although this effort to change timekeeping was short-lived.
The Reign of Terror led to the imprisonment and execution of many, including the king and queen, which showed a marked departure from the existing social hierarchy and political power structure. Eventually, the era ended with the rise of the Directory and, later, Napoleon's rule.