The factors favored was that they were free to the land.
What were the three classes of French society? The three classes of the French society are divided in three estates. The first estate consisted of the Roman catholic clergy. The second estate was nobles and the third estate bourgeoisie merchants and skilled workers city workers, and peasants
Well, if we are talking about the black death? A reaction that they did was they all went into hiding because they thought that the black death was an angel or something targeting certain families, they were right it was something but it was just a virus that almost killed an entire country!!