Throughout all of history, in all societies, people have divided into classes that continue to struggle with one another until there is revolution in the society or a "common ruin of the contending classes." These divisions of people result always in a group of oppressors and a group of oppressed. The bourgeois society now in place has not cured people of class struggles, but has simply replaced the old ones with new ones.
Unlike other epochs of history where multiple struggles took place between the respective parties involved, people of the bourgeois society are dividing into only two major groups, "two great classes directly facing each other: bourgeoisie and proletariat.".
After the discovery of America, when trade with the colonies and other markets around the world began to expand, there became a rapid development in navigation, industry, commerce, and so forth. Closed guilds that monopolized production were no longer able to meet the demands of growing markets, and were replaced by the manufacturing middle class. As markets grew even more, machinery and steam engines completely revolutionized industrial production. "The place of manufacture was taken by the giant, modern industry, the place of the industrial middle class, by industrial millionaires, and the leaders of whole industrial armies, the modern bourgeois.".
As modern industry rapidly improved and expanded, and world markets were established, the bourgeoisie increased its capital and its political stature; what started as "an oppressed class under feudal nobility" ended as the rulers of modern industry. With control over the markets of the world, it was only natural for the bourgeoisie to gain exclusive political power; "the executive of the modern state is but a committee for managing the whole affairs of the common bourgeoisie.".
Ever growing, the bourgeois society creates for itself a problem "that in all earlier epochs, would have seemed an absurdity overproduction.