The correct option is D French revolution
The French Revolution completely changed the social and political structure of France by putting an end to the French monarchy, feudalism, and taking over political power from the Catholic church. The French Revolution lasted 10 years from 1789 to 1799. People could take mass actions like protest with the help of the movements for liberty, equality and fraternity. These movements helped in the creation of democratic institutions like the French parliamentary assemblies of the 1790s. They also reduced the difficulties of war by controlling the prices of necessities like bread.