How many Estates (classes) were there in France at the time of the French Revolution?

Explanation:

The estates of the realm were the broad orders of social hierarchy used in Christendom (Christian Europe) from the medieval period to early modern Europe. Different systems for dividing society members into estates evolved over time. The best-known system is the three-estate system of the French Ancien Régime used until the French Revolution (1789–1799). This system was made up of clergy (the First Estate), nobility (the Second Estate), and commoners (the Third Estate).

Thee Estates

most people now work in jobs where they do one  kind  of work; they are carpenters, bankers, cooks, mechanics, and so forth. likewise, most  businesses produce  only certainkinds  of  goods  or  services, such as cars, tacos, or gardening  services. this feature of  production  is known as specialization.

the border between arizona and new mexico is a thin, black line; this indicates a state boundary.

its correct: it's a thin line, and it's a state boundary, correct