Final answer:
Marx believed that societies are divided into warring classes, which consist of the bourgeoisie and the proletariat. The bourgeoisie are the middle class, who own the means of production, while the proletariat are the workers who perform manual labor.
Step-by-step explanation:
Marx believed that human societies have always been divided into warring classes. These classes were the bourgeoisie, the middle class, and the proletariat, or workers. According to Marx, the bourgeoisie were the rising middle classes who owned the means of production, such as factories and land. The proletariat, on the other hand, were the workers who performed manual labor to produce goods.