Sentence:  He terms this early enthusiasm `` Romantic Christianity '' and concludes that its similarity to democratic beliefs of that day is so great that `` the doctrine of liberty seems but a secular version of its counterpart in evangelical <WSD>Protestantism</WSD> '' . 
Meaning of the word marked with <WSD> tags:  the theological system of any of the churches of western Christendom that separated from the Roman Catholic Church during the Reformation