Country Codes and General Knowledge

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Algeria's ISO 3166-1 alpha-2 country code is DZ. AL is the code for Albania, not Algeria. Country codes are standardized two-letter codes used internationally to identify countries.

Switzerland's ISO 3166-1 alpha-2 country code is CH, which comes from the Latin name 'Confoederatio Helvetica'. SW and SZ are incorrect codes - SD is Sudan, SZ is Eswatini (formerly Swaziland).

Germany's ISO 3166-1 alpha-2 country code is DE, from 'Deutschland' (Germany in German). GY is Guyana, GE is Georgia, and GM is Gambia. Country codes often derive from the country's name in its own language.

Cambodia's ISO 3166-1 alpha-2 country code is KH, from 'Khmer' (the Cambodian people and language). CA is Canada, CB is not a valid country code, and BO is Bolivia.

Spain's ISO 3166-1 alpha-2 country code is ES, from 'España' (Spain in Spanish). SP is not a valid ISO country code, PA is Panama, and SN is Senegal. Many country codes use the native name.

Sweden's ISO 3166-1 alpha-2 country code is SE, from 'Sverige' (Sweden in Swedish). SW is not a valid country code, ED is not valid, and SD is Sudan. The code uses the native Swedish name.

Croatia's ISO 3166-1 alpha-2 country code is HR, from 'Hrvatska' (Croatia in Croatian). CR is Costa Rica, CT and OA are not valid ISO country codes. The code derives from the native Croatian name.

Sri Lanka's ISO 3166-1 alpha-2 country code is LK. SL is Sierra Leone, LA is Laos, and SR is not a valid ISO country code (though Suriname uses SR). The code LK doesn't directly derive from the country's name but is the assigned ISO code.

Austria's ISO 3166-1 alpha-2 country code is AT. AU is Australia, AR is Argentina, and ST is Sao Tome and Principe.

India's ISO 3166-1 alpha-2 country code is IN. ID is Indonesia, while IA and II are not valid ISO country codes.

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