This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
A movement rarely announces itself as one at its own starting point. It is named afterward, once a renewal impulse, a charismatic leader, or a contested doctrinal question has produced a current distinct enough from its surrounding tradition that scholars and the tradition's own members alike need a word for it. The Holiness Movement's pursuit of entire sanctification grew out of nineteenth century Methodism before taking a shape and a name of its own; the Charismatic Movement carried Pentecostal emphases on spiritual gifts into churches that had never been Pentecostal; Liberation Theology named itself directly, a documented response by Latin American theologians to social conditions the wider Catholic tradition had not yet addressed in the same terms.
The comparative study of religious movements treats each movement as a case with its own documented origin, its own account of why it arose, and its own institutional trajectory: some movements dissolve, some harden into a denomination, some remain a current inside a tradition that never formally separates from it. Scholars working in the field are explicit that a movement's own telling of its founding, often built around a single defining event or a founder's own testimony, is a fact worth recording in its own right, separate from the independent, cross checked historical account of the same events.
That double record, a movement's own story and the outside historical account of it, is what a comparative study of movements actually compares. The African Initiated Churches are a documented case in point: hundreds of independently founded movements across a continent, each with its own founding narrative, that scholarship treats as a connected phenomenon by tracing what they share in circumstance and method rather than by imposing one movement's story onto the rest.