I know that the Great Wall "Barbarians won't enter your cultural boundary" effect only works on the continent that you built it.
But does the same go for the "increased GG production rate in your cultural boundary"? Are will battles in my cultural boundary on other continents also get the GG production bonus?
But does the same go for the "increased GG production rate in your cultural boundary"? Are will battles in my cultural boundary on other continents also get the GG production bonus?