When alphabetising countries in English (specifically, a drop-down menu on my website), "El Salvador" is after "Egypt" and "the Gambia" is after "Gabon"; "Virgin Islands" and "Christmas Island" are sorted in the "V" and "C" areas respectively.
In the Spanish version of the same list, would "El Salvador" be filed under "E" or "S"? (Traditionally; not necessarily whatever is in vogue now.)
Also, would (in a properly-sorted list of nations and territories) there be (under "R" and "I") several countries beginning with the word "República" or "Isla"? Or would "Dominica" and "República Dominicana" be nowhere near each other in such a list? (On the other hand, the two Koreas do end up being listed consecutively in Spanish.)
The Spanish lists of nations that I have found online appear to be programmatically sorted (by the same methods that file "Michael Jackson" under "M" instead of "J") and tend to exclude non-sovereign territories such as the aforementioned Virgin and Christmas Islands. So I'm not 100% sure that a strict alphabetic ordering is observed in real life.