Where does “東加” come from?

東加 (Chinese) comes from English Tonga, from Tongan Tonga, from Samoan toga — south; southern.

Ancestry of “東加”, step by step

StepLanguageWordMeaning
1EnglishTongaA Bantu, in the Nyasa branch, spoken in Malawi
2TonganTonga—
3Samoantogasouth; southern
Every word from Samoan toga →Every word from Tongan Tonga →Every word from English Tonga →
東加 — Etymology, Origin & Word History | Etymology Explorer