single word requests - Is there a process name for an island becoming unisolated?

I previously asked this but unfortunately had no good luck, and I was recommended to give this a go, so:

Basically I would like to know if there is an official term for the process which an independent island would undertake once reaching the point in societal/technological development to travel to other islands/land masses and end their isolation by interacting with other peoples through trade/war/etc.

Just to clarify, I mean the island's isolation ending due to the island itself exploring the outside world, not other people landing on the island and colonising it (etc).

Also, if there is only an umbrella term which refers to isolated people in general making outside contact, please provide this but clarify this to be the case.

Thank you very much!