Template:Geodata/doc

Usage
This template receives up to 3 parameters. The first of them is the name of the country in Spanish (i.e. Armenia, Italy ...). The second is the variant of the flag, and it is optional (i.e. 1952 Armenian Soviet Socialist Republic). The third is the size of the flag, and it should not be used unless it is strictly necessary, to preserve uniformity in style.
 * Current country flag:  🇦🇲 Armenia  → 🇦🇲 Armenia
 * Flag of the Armenian Soviet Socialist Republic: 🇦🇲 Armenia  → 🇦🇲 Armenia
 * Flag of the Democratic Republic of Armenia at 150px: 🇦🇲 Armenia  → 🇦🇲 Armenia

You can see the countries available in Category:Geodata templates, and the flags it offers available for each country in the template itself. For example Geodata Armenia.