Use {{location|AR}} to tag expeditions that took place in Argentina. It will add Category:Meetup in Argentina to the expedition.
Using ISO 3166-2 abbreviations, you may also tag the province 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 Buenos Aires is a subcategory of Category:Meetup in Argentina. The subcategories should be sorted in by their respective code.
Examples
{{location|AR}}: Argentina{{location|AR|C}}: Buenos Aires{{location|AR|Q}}: Provincia del Neuquén
