In the first and most fundamental place, the successful “struggle for power” of the bourgeoisie against the feudal lords can be interpreted as simply a picturesque way of expressing the result of what did, in fact, actually happen: namely, in the Middle Ages society was organized in a way that made the feudal lords the ruling class, possessed of chief power and privilege; later on society was organized differently, in a way that made the bourgeoisie the ruling class.