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In page History of Esperanto:

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Portugal's right-wing governments cracked down on the language from 1936 until they were deposed in the Carnation Revolution of 1974.[7][8] After the Spanish Civil War, Francoist Spain cracked down on the Anarchists and Catalan nationalists among whom the speaking of Esperanto had been quite widespread; but in the 1950s, the Esperanto movement was tolerated again,[9] with Francisco Franco accepting the honorary patronage of the Madrid World Esperanto Congress.[citation needed]