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 Christian Manifesto that the church could make its position understood by the largely non-Christian Chinese population who shared their patriotism but not their religion. Before the manifesto, the Chinese Church had separated church and state matters, but according to Oi, "The Christian Manifesto" marked a turning point in this regard. The Christian Manifesto "Direction of Endeavor for Chinese Christianity in the Construction of New China", commonly known as "The Christian Manifesto" or "The Three-Self Manifesto", was a political manifesto of Protestants in China whereby they backed the newly-founded People's Republic of China (PRC) and the leadership of the Communist Party of China