Some members of this class may have relatives from similar backgrounds, or may even have aristocratic connections.
The moyenne bourgeoisie is the equivalent of the British and American upper-middle classes.
In the course of economic relations, the working class and the bourgeoisie continually engage in class struggle, where the capitalists exploit the workers, while the workers resist their economic exploitation, which occurs because the worker owns no means of production, and, to earn a living, he or she seeks employment from the bourgeois capitalist; the worker produces goods and services that are property of the employer, who sells them for a price.
In the 19th century, the bourgeoisie propounded liberalism, and gained political rights, religious rights, and civil liberties for themselves and the lower social classes; thus the bourgeoisie was a progressive philosophic and political force in Western societies.
After the Industrial Revolution (1750–1850), by the mid-19th century the great expansion of the bourgeoisie social class caused its stratification – by business activity and by economic function – into the haute bourgeoisie (bankers and industrialists) and the petite bourgeoisie (tradesmen and white-collar workers).
Besides describing the social class who owns the means of production, the Marxist use of the term "bourgeois" also describes the consumerist style of life derived from the ownership of capital and real property.
Marx acknowledged the bourgeois industriousness that created wealth, but criticised the moral hypocrisy of the bourgeoisie when they ignored the alleged origins of their wealth: the exploitation of the proletariat, the urban and rural workers.