If you want to permanently restrict your content from being visible in certain
countries or only allow it to appear in specific countries, you can set country
restrictions directly on your Facebook Page. This eliminates the need to
configure targeting settings each time you publish a post.
Specify which countries should either see or be restricted from seeing your content
Important: These page-level country restrictions will override any country
targeting you set using faceBookOptions.targeting.countries in your API calls.
If you’ve restricted a country at the Page level, Facebook users won’t see your
content even if you include their country in your post targeting.