Map of Hallstatt and La Tène expansions

[MOESAN]

Cultural diffusion before immigration is common. Can be mentioneddiffusion of Greek goods in the south of Gaul in the VIIth century before theinstallation of the Greeks in Massalia, and diffusion of Roman goods before theconquest of the Transalpine.

I did not explain correctly my meanings: I spoke about diverse life horizons culture and not about sharing some trade stuff uniquely - evidently, if a trade is easy with a foreign region it can lead to conquest plans... but goods are not a complete cultural change, in my way of seeing things
thanks for answer, have a good sunday evening