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Bran Castle, Transylvania
1600 – The Diet of Léczfalva, Transylvania, used the word Unitarian as an adjective. This is the first time that the term was recorded. Since the Council of Nicea in A.D. 325, when the central issue was whether Jesus is the same as or different from God, an underground “Unitarian” movement existed until the mid-1500s, when separate churches were organized.
