According to Karl Marx in all stratified societies there are two major social groups: a ruling class and a subject class. The ruling class derives its power from its ownership and control of the forces of production. The ruling class exploits and oppresses the subject class. As a result there is a basic conflict of interest between the two classes. The various institutions of society such as the legal and political system are instruments of ruling class domination and serve to further its interests. Marx believed that western society developed through four main epochs-primitive communism, ancient society, feudal society and capitalist society. Primitive communism is represented by the societies of pre-history and provides the only example of the classless society. From then all societies are divided into two major classes - master and slaves in ancient society, lords and serfs in feudal society and capitalist and wage labourers in capitalist society. Weber sees class in economic terms. He argues that classes develop in market economies in which individuals compete for economic gain. He defines a class as a group of individuals who share a similar position in market economy and by virtue of that fact receive similar economic rewards. Thus a person's class situation is basically his market situation. Those who share a similar class situation also share similar life chances. Their economic position will directly affect their chances of obtaining those things defined as desirable in their society. Weber argues that the major class division is between those who own the forces of production and those who do not. He distinguished the following class grouping in capitalist society:
The propertied upper class
The property less white collar workers
The petty bourgeoisie
The manual working class.