related sources of power, each with different effects on social action. Working half a century later than Marx, Weber claims there to be four main social classes: the upper class, the white collar workers, the petite bourgeoisie, and the manual working class. Weber's theory more-closely resembles contemporary Western class structures, although economic status does not currently seem to depend strictly on earnings in the way Weber envisioned. Weber derives many of his key concepts on social stratification by examining the social structure of Germany. He notes that, contrary to Marx's theories, stratification is based on more than simple ownership of capital. Weber examines how many members of the aristocracy lacked economic wealth yet had strong political power. Many wealthy families lacked prestige and power, for example, because they were Jewish. Weber introduced three independent factors that form his theory of stratification hierarchy, which are; class, status, and power: Class: A person's economic position in a society, based on birth and individual achievement. Weber differs from Marx in that he does not see this as the supreme factor in stratification. Weber notes how corporate executives control firms they typically do not own; Marx would have placed these people in the proletariat despite their high incomes by virtue of the fact they sell their labor instead of owning capital. Status: A person's prestige, social honor, or popularity in a society. Weber notes that political power is not rooted in capital value solely, but also in one's individual status. Poets or saints, for example, can have extensive influence on society despite few material resources. Power: A person's ability to get their way despite the resistance of others, particularly in their ability to engage social change. For example, individuals in government jobs, such as an employee of the Federal Bureau of Investigation, or a member of the United States Congress, may hold little property or status but still wield considerable social power. C. Wright Mills C. Wright Mills, drawing from the theories of Vilfredo Pareto and Gaetano Mosca, contends that the imbalance of power in society derives from the complete absence of countervailing powers against corporate leaders of the power elite. Mills both incorporated and revised Marxist ideas. While he shared Marx's recognition of a dominant wealthy and powerful class, Mills believed that the source for that power lay not only in the economic realm but also in the political and military arenas. During