You can use GEO objekts with R80.20 in policy and you can do GEO rules in the regular Access Policy.
Currently no regional settings can be used in the access policy with R80.10 and lower. This only works in the „GEO policy“ and has the disadvantage that no special settings are possible. For example, no services like http can be specified.
This solution helps and creates dynamic objects with the IP ranges of the individual countries.
With R80.10 and lower you can use my script to do that:
GEO Location Objects in Firewall Policy (with Dynamic Objects)
➜ CCSM Elite, CCME, CCTE