Maybe the clans location could reject people from different areas unless the clan is set to 'international'. Supercell already knows where you are based so it shouldn't be too hard to implement. You could maybe also select multiple continents/countries to let players in from, I.e you might only want English speakers so you pick the us, Canada, U.K., Australia and New Zealand. Or you could just select North America and then players will only be allowed in if their location is in that region.

