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: