Communism is the doctrine of the conditions of the liberation of the proletariat.
The working classes have always, according to the different stages of development of society, lived in different circumstances and had different relations to the owning and ruling classes.
This division of labor made it possible to produce things faster and cheaper.
It reduced the activity of the individual worker to simple, endlessly repeated mechanical motions which could be performed not only as well but much better by a machine.
The result was that the capitalists soon had everything in their hands and nothing remained to the workers.
This marked the introduction of the factory system into the textile industry.