Business cycle by Charles Dunoyer, and similar theories, showing signs of influence by Sismondi, were developed by Johann Karl Rodbertus. Periodic crises in capitalism formed the basis of the theory of Karl Marx, who further claimed that these crises were increasing in severity and, on the basis of which, he predicted a communist revolution. Though only passing references in "Das Kapital" (1867) refer to crises, they were extensively discussed in Marx's posthumously published books, particularly in "Theories of Surplus Value". In "Progress and Poverty" (1879), Henry George focused on land's role in crises – particularly land speculation – and proposed a single
The Communist Manifesto publicly owned etc.—the implementation of which would result in the precursor to a stateless and classless society. The third section, "Socialist and Communist Literature", distinguishes communism from other socialist doctrines prevalent at the time—these being broadly categorised as Reactionary Socialism; Conservative or Bourgeois Socialism; and Critical-Utopian Socialism and Communism. While the degree of reproach toward rival perspectives varies, all are dismissed for advocating reformism and failing to recognise the pre-eminent revolutionary role of the working class. "Position of the Communists in Relation to the Various Opposition Parties", the concluding section of the "Manifesto", briefly discusses the communist position on struggles