Weber is best known for his other thesis combining economic sociology and the sociology of religion, emphasising the importance of cultural influences embedded in religion as a means for understanding the genesis of capitalism (in contrast to Marx's historical materialism).[lower-roman 1] Weber would first elaborate his theory in his seminal work, The Protestant Ethic and the Spirit of Capitalism (1905), where he attributed ascetic Protestantism as one of the major "elective affinities" leading to the rise of market-driven capitalism and the rational-legal nation-state in the Western world.[20] Arguing the boosting of capitalism as a basic tenet of Protestantism, Weber suggested that the spirit of capitalism is inherent in Protestant religious values.[20] Protestant Ethic would form the earliest part in Weber's broader investigations into world religions, as he later examined the religions of China and India, as well as ancient Judaism, with particular regard to their differing economic consequences and conditions of social stratification. In another major work, "Politics as a Vocation", Weber defined "the state" as an entity that successfully claims a "monopoly of the legitimate use of physical force within a given territory".[21] He would also be the first to categorise social authority into distinct forms: charismatic, traditional, and rational-legal. Among these categories, Weber's analysis of bureaucracy emphasized that modern state institutions are increasingly based on the latter (rational-legal authority).