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The Russian anarchist Peter Kropotkin first noted in his book Mutual Aid that Norse society, from which the settlers in Iceland came, had various "mutual aid" institutions, including communal land ownership (based around what he called "the village community") and a form of social self-administration, the "Thing" – both local and Iceland-wide – which can be considered a "primitive" form of the anarchist communal assembly.
Billion Dollar Gift and Mutual Aid Canada's gift of $4 billion to Britain in the Second World War
Le Guin's foreword to the novel notes that her anarchism is closely akin to that of Peter Kropotkin's, whose Mutual Aid closely assessed the influence of the natural world on competition and cooperation.