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Morgan had described customary property owned by tightly bonded kin groups; real-world Communist regimes in the former USSR and China forced millions of unrelated peasants into collective farms. By breaking the link between individual effort and reward, collectivization undermined incentives to work, leading to mass famines in Russia and China, and severely reducing agricultural productivity. In the former USSR, the 4 percent of land that remained privately owned accounted for almost one-quarter of total agricultural output. In China, once collective farms were disbanded in 1978 under the leadership of the reformer Deng Xiaoping, agricultural output doubled in the space of just four years.
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Francis Fukuyama (The Origins of Political Order: From Prehuman Times to the French Revolution)