Reen and brown algae share many common features. Both have pigments for trapping sunlight and use photosynthesis for energy. Both store their food as sugars. Both have cell walls and plant-like bodies. However, their DNA suggests that they are not even remotely related to one another. Green algae and brown algae show evolution, since they look similar, but are not close relatives.

Convergent evolution

Explanation:

Convergent evolution is a type of evolutionary change that occurs in which two species of organisms that do not share the same ancestral line evolve similar traits independently as a result of similarity in their environmental conditions that they both have to adapt to. Green algae and brown algae can be said to show convergent evolution as they appear similar but are not closely related, meaning they do not share the same ancestral origin

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.