Use {{location|BR}}
to tag expeditions that took place in Brazil. It will add Category:Meetup in Brazil to the expedition.
Using ISO 3166-2 abbreviations, you may also tag the federated unit that the expedition took place in.
If the category link appears red, do not worry and create the category. Make sure that it is included in the appropriate parent category, for instance, Category:Meetup in Pernambuco is a subcategory of Category:Meetup in Brazil. The subcategories should be sorted in by their respective code.
Examples
{{location|BR}}
: Brazil{{location|BR|PE}}
: Pernambuco