How to decide good GEOs in Ad Platforms?

[Ankitpal888]

I am working on PropellerAds and it is very hard to find the best converting GEOs in PropellerAds because they can recommend creating a separate campaign for each GEO. If we can test and try on every geo then, it might require a more investment for the testing campaigns. How can we find and decide the best-converting GEOs in different Ad networks like propellerads. If our offer allows us to promote on