#####User stories:
As an organizer of an in person or hybrid event, I want to be able to indicate the country where it will be taking place, so people who live in or plan to visit the country may more easily find the event and potentially join it.
As a contributor, I want to know which in person or hybrid events are occurring in my country, so that I can find events that I am more likely to be able to attend in person.
As a member of the Campaigns team, I want to know the country of in person and hybrid events, so that we can determine which events are taking place in countries with higher sensitivities under the [[ https://foundation.wikimedia.org/wiki/Legal:Wikimedia_Foundation_Country_and_Territory_Protection_List | Country & Territory Protection List ]].
#####Background:
We have learned from [[ https://meta.wikimedia.org/wiki/CampaignEvents/Collaboration_list/Survey_1_and_2_findings | survey findings ]] that many people would like to have a search filter in the Collaboration List to search for events by country. This is even more important now that we allow transclusion of the Collaboration List, since the inclusion of a country filter could allow people to create event calendars for a specific country.
Meanwhile, for our upcoming project to track collaborative contributions (T378035), we plan to offer special protective measures for in person or hybrid events that take place in countries that are [[ https://foundation.wikimedia.org/wiki/Legal:Wikimedia_Foundation_Country_and_Territory_Protection_List#Higher_risk | Higher Risk ]] and [[ https://foundation.wikimedia.org/wiki/Legal:Wikimedia_Foundation_Country_and_Territory_Protection_List#Not_published | Not Published ]] in the Country & Territory Protection List. For these reasons, we would like allow a way for organizers of in person & hybrid events to indicate the country through a structured list (rather than the current plaintext field). We will use the full [[ https://gitlab.wikimedia.org/repos/movement-insights/canonical-data/-/blob/main/country/countries.tsv | canonical country list ]].
#### Ordering:
How do we structure and sort the country list? For example, should it be completely alphabetized? Should we have headers by continent?
#### Limitations:
* Organizers should only be able to pick 1 country - maybe we will allow more than 1 later, but this is beyond the scope for the MVP
#### Acceptance Criteria:
* Determine how we can update the country field in event registration configuration to be a structured list and share findings with team on recommendations/next steps
* The countries/regions below should be removed from the list of countries returned by CLDR:
```
['CP' => 'Clipperton Island'],
['CQ' => 'Sark'],
['DG' => 'Diego Garcia'],
['EA' => 'Ceuta & Melilla'],
['EU' => 'European Union'],
['EZ' => 'Eurozone'],
['IC' => 'Canary Islands'],
['QO' => 'Outlying Oceania'],
['TA' => 'Tristan da Cunha'],
['UN' => 'UN'],
['XA' => 'Pseudo-Accents'],
['XB' => 'Pseudo-Bidi'] (edited)
```