Golasecca culture is divided for convenient reference into three parts: the first two cover the period of the 9th to the first half of the 5th century BC; the third, coinciding with La Tène A-B of the later Iron Age in this region and extending to the end of the 4th century BC, is marked by increasing Celtic influences, culminating in Celtic hegemony after the conquests of 388 BC.
Golasecca culture is divided into three phases: the first two periods are from the 9th to the early 5th century BC; the third phase, corresponding to La Tène A-B during the later Iron Age in this area and extending until the end of the 4th century BC, shows an increase in Celtic influence culminating in Celtic dominance after the conquests of 388 BC.