Sometimes the cultural change was an autochthonous development.
Intentionally, and to a certain extent, Rimsky's work is autochthonous.
Apparently from mother earth herself they had come, autochthonous.
Thus Ancient Egypt believed itself to be autochthonous, and traced the origin of arts and sciences to native gods.
Smilisca is an excellent example of an Autochthonous Middle ...