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In page Trotskyism:

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Trotsky agreed that a new socialist state and economy in a country like Russia would not be able to hold out against the pressures of a hostile capitalist world and the internal pressures of its backward economy.[citation needed] Trotsky argued that the revolution must quickly spread to capitalist countries, bringing about a socialist revolution that must spread worldwide. In this way, the revolution is "permanent", moving out of necessity first, from the bourgeois revolution to the workers' revolution and from there uninterruptedly to European and worldwide revolutions.[citation needed]