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Petr Kropotkin proposed the theory of Pleistocene ice age, alternative theories of evolution based on embryology, and he advocated anarchist and communist social doctrines in Europe during the nineteenth and twentieth centuries. He traveled in eastern Siberia and Manchuria from 1863 until 1867, and his subsequent publications about that area's geography became authoritative until the middle of the twentieth century. Kropotkin argued that his geographic and geologic observations in Asia, Finland, Sweden, and Canada, supported the theory of Pleistocene continental glaciation, often called the ice age. He was one of the first to study the ancient geography and climate of the Quaternary period, which spans from 2.5 million years ago until the present. Around the turn of the nineteenth century, Kropotkin offered what he said were complementary amendments to Charles Darwin's 1859 theory of evolution by natural selection. Kropotkin employed a variety of arguments from natural history, embryology, and geography to support his theory of mutual aid, which he argued was a positive mechanistic addition to the theory of evolution.
This dissertation is based on significant archival research and utilizes various state and Communist Party documents, as well as memoirs, letters, and other personal sources in both Russian and Tatar. It challenges traditional periodization by bridging the Stalin and post-Stalin eras and emphasizes on-the-ground developments rather than official state policy. Finally, it offers insight into the relationship between communism and ethnic difference and presents a nuanced vision of Soviet power that helps to explain the continuing role of nationalism in the contemporary Russian Federation and other post-communist states.