This article examines the peculiarities of the Reformation process in the Hungarian territories. followed by the formation of a Unitarian (Anti-Trinitarian) church in Transylvania in the 16th century. The study aims to identify the specific features and periodization of this process in the said area. The first feature is the complex ethnic composition of the population. https://globechemicalcompanyls.shop/product-category/cleaner-disinfectant/