preVatican
PreVatican is a neologism used in speculative history and religious studies to denote the period preceding the establishment of the modern Vatican as a distinctly sovereign city-state. The term is not official within church historiography and lacks a fixed chronological boundary. In broad usage, preVatican can refer to times before the papacy acquired substantial temporal power, or to the era before the 1929 Lateran Treaty and the creation of Vatican City, depending on the context.
As a research and narrative concept, preVatican is employed mainly in alternative histories, worldbuilding, and discussions
Impact and debates: The term is criticized for being imprecise and potentially anachronistic because ecclesiastical authority
See also: Papacy, Papal States, Vatican City, Lateran Treaty, Early Church.