Answer:
Both, Karl Marx and Max Weber were classical German sociologist:
As they performed work in the field to understand it concepts more. As at a certain point or topic in the field they got stuck with arguments, with there theoretical assumptions on notion of "Capitalism", as they had different perceptions and ideas regarding the term Capitalism, which they also published in there works
Step-by-step explanation:
According to Max Weber, capitalism is not just because of modern economy development, but its mainly due to the religious and social terms, which shaped the capitalism structure. As in the European region mainly, Max Weber identified that development of capitalism occurred just because of the religious factors in the region mainly because of Protestantism.
As for Marx's he analyzed the idea of Capitalism and saw it as merely development from the previous procedures and ways of production, such as slavery and feudalism. As it became a system of production of commodities which only granted workers with little money or incentives just to provide enough gain of the capitalist bourgeoisie(capitalist ownership class).