What happened at point B? Why?

It looks like at B, the population either decreases, or people did not populate that much during that time, or their could have been a wide spread disease that could have killed many people, which would have made a decrease in the human population

Explanation:

I hope this helps

population has decreased over that period ,MAyBe

Explanation:

I don't know why

you did not attach the discourse, but i assume it to be the discourse on the origin and basis of inequality among men (the original titile in french is: "discours sur l'origine et les fondements de l'inégalité parmi les hommes"), also know as "second discourse". in this discourse, jean-jacques rousseau emphasizes that private property is the basis of all inequalities.

therefore, what enabled the old regime to maintain as long as it did was private property.