Answer:
According to Rousseau, and what made his works more radical than that of other Enlightment authors, was his belief that the institution of private property was the main root of inequality across the social contract.
Step-by-step explanation:
Rousseau was a believer that history was a decay process, and that the ancien régime (the monarchy and aristocracy) was doomed precisely due to the contradictions between the opulence of the aristocracy and the pauperation of the masses. Therefore, he concluded that, although humas are inequal according to specific traits (physique, intelligence) the social contract based on property was the root of the worst of inequalities.