The spelling of "Eurasiatio" can be explained using the IPA phonetic transcription. The word is pronounced as /jʊərˈeɪʒiːʃɪəʊ/. It is a compound word formed by combining "Eurasia" and "-tion" suffix. The first syllable is pronounced as "yoo-rah" with a stressed 'a' sound, while the second syllable is pronounced as "zhee" with a long 'e' sound. The last syllable "-tio" is pronounced as "shuh" with a stressed short 'i' sound. Hence, the spelling of "Eurasiatio" is derived from its pronunciation using the IPA phonetic transcription.