late edit: DISCLAIMER: The pictured map is not actually a representation of the territories before colonisation. It's a hypothetical map of what countries there might have been had the continent not been colonised, thus all the names and borders are fictional and have never existed.
i mean a trivial solution to this is to just use colours with a soft gradient at the edges, you have a rough outline but it's clear that there is no hard border
i mean a trivial solution to this is to just use colours with a soft gradient at the edges, you have a rough outline but it's clear that there is no hard border