What was the cause for the French Revolution?

The demand for individual rights was the cause for the French Revolution. The Church and the Aristocracy dominated the society. The peasants, businessmen and the rest of the society who were called the 3^rd estate were dissatisfied. When living conditions became harsh the poor among the 3^rd estate revolted. This lead to the outbreak of revolutionary protest in France.
 
The French Revolution (1789–1799) was a period of political and social upheaval and radical change in the history of France, during which the French governmental structure, previously an absolute monarchy with feudal privileges for the aristocracy and Catholic clergy, underwent radical change to forms based on Enlightenment principles of citizenship and inalienable rights. 
These changes were accompanied by violent turmoil which included the trial and execution of the king, vast bloodshed and repression during the Reign of Terror, and warfare involving every other major European power. Subsequent events that can be traced to the Revolution include the Napoleonic Wars, two separate restorations of the monarchy, and two additional revolutions as modern France took shape.