<span>thermometer is the answer dude
</span>
By birth? i think? do you mean like how did they get in a certain caste? because then it would be by birth. but if you mean like what were the castes, i forget.
Answer:
Violently
Explanation:
Robespierre and his rise to power was a main force of what is known as, "The Reign of Terror" that occured after the French Revolution.
You nedd to swith the last one and the third one around i think