Where does “肥沃な三日月地帯” come from?

肥沃な三日月地帯 (Japanese) comes from Japanese 三日月, from Japanese 月, from Old Japanese 月, from Proto-Japonic tukuy, from Proto-Japonic tuku.

Ancestry of “肥沃な三日月地帯”, step by step

肥沃な三日月地帯 traces back through 3 separate lines of ancestry.

via Japanese 三日月

StepLanguageWordMeaning
1Japanese三日月a crescent moon on the third day of a lunar month, especially on the eighth lunar month
2Japanese月the moon; a natural satellite; moonlight,...
3Old Japanese月the moon; a month; a menstrual cycle,...
4Proto-Japonictukuymoon
5Proto-Japonictuku—

via Japanese な

StepLanguageWordMeaning
1Japaneseなused to get someone's attention, generally...
2Japaneseねemphasis and question marker particle; asks for...

via Japanese 地帯

StepLanguageWordMeaning
1Japanese地帯area, zone
Every word from Proto-Japonic tuku →Every word from Proto-Japonic tukuy →Every word from Old Japanese 月 →