What are causes and effects of the French Revolution?

the people are really not having humanity and would kill the people as they wish even if they do a small mistake like scolding a small Word to someone and the French Revolution kings would print a stamp on the slaves to indcate that they are slaves

The proximate cause of the French revolution was the King's request for increased taxes. The long-term causes include the unholy alliance between church and state, aristocratic privilege, and chronic near-starvation in the French population due to low farm productivity.