The period of the La Tène culture is subdivided into "La Tène A", c. 450–400 BC; "La Tène B", c. 400–250 BC; "La Tène C", c. 250–150 BC; and "La Tène D", c. 150–0 BC. The period from 200 to 0 BC may also be considered a younger pre-Roman period. It was followed by a period of Roman influence whose early stage lasted from c. 0 to 150 AD and its later stage from c. 150 to 375 AD. The period from 375 to 500 AD constitutes the (pre-Slavic) Migration Period.