This question is inspired by the recent Black Panther movie where two technologically advanced nations essentially hid from the rest of humanity for all time. Ignoring the fantasy SciFi aspects, this behaviour seems contrary to what I know of human history.

It seems like every nation in history has made it a habit to expand borders when possible and exert influence on neighbouring kingdoms. Plenty of examples of nations attempting to limit cultural importation (blue jeans in the USSR) but even in those examples the host nation still attempts to export their own cultural products.

So have there been nations that tried to fully cut themselves off from the rest of the world and not try expand their sphere of influence or seize land or resources from neighboring states?