[Suki]

There's no Ñ in the English alphabet. Names adapt to the countries' language so that its speakers can pronounce and spell them according to the alphabet of each language.

For example:

United (adj) States (noun)

In English, the adjective is placed before the noun but it does not happen in every language. In Spanish, adjectives go after the noun, so saying Unidos Estados would be both grammatically and semantically wrong, so it changes to: Estados Unidos.

Also, in Spanish words can only begin with an S if it's followed by a vowel.

Spain --> España

Special --> Especial

And so on.