Where does “Saudarabio” come from?

Saudarabio (Esperanto) comes from English Saudi Arabia, from English Arabia, from Latin Arabia, from Ancient Greek Ἀραβία, from Ancient Greek -ῐ́ᾱ, from Proto-Indo-European -íh₂, from Proto-Indo-European -h₂ — Creates collective nouns, which refer to groups...

Ancestry of “Saudarabio”, step by step

Step	Language	Word	Meaning
1	English	Saudi Arabia	—
2	English	Arabia	—
3	Latin	Arabia	—
4	Ancient Greek	Ἀραβία	Arabia
5	Ancient Greek	-ῐ́ᾱ	{{l\|en\|-ia}}; "suffix forming abstract feminine...
6	Proto-Indo-European	-íh₂	—
7	Proto-Indo-European	-h₂	Creates collective nouns, which refer to groups...

Every word from Proto-Indo-European -h₂ →Every word from Ancient Greek -ῐ́ᾱ →Every word from Ancient Greek Ἀραβία →