Rousseau was a great French philosopher, his contribution to the Enlightenment during the 17th century was that he wrote the Age of Enlightenment about politics, freedom.
Step-by-step explanation:
Jean-Jacques was a French philosopher who is famous for writing Age of Enlightenment otherwise known as ''Age of Reason''. It is an intellectual movement that includes the primary principles of society like freedom, politics, reason (it is the ability to sense the things, apply logic and facts, adapting situations, etc..) and democracy.
This movement built a strong path to the political revolution in the 18th and 19th centuries. Some of the European rulers also tried to apply the Age of Enlightenment act. He strongly claimed that society is based on the reason when compared to faith.