On va prendre de l'essence d'abord, nan?
We're going to get gas first, right?
I think there's an innate human desire to modify the sentence to make it a question with as few additional sounds as possible.
See https://www.perseus.tufts.edu/hopper/text?doc=Perseus:text:1... , especially paragraph #332.
I don't mean to say that this is a coincidence as far as the European languages go; negation words with N are often a shared inheritance from Indo-European
https://en.wiktionary.org/wiki/Reconstruction:Proto-Indo-Eur...
Makes total sense now.
Swedish:"må" <=> Japanese:"mo". "allowed to" Pronounced the same.
Expression: Swedish:"det går inte"(not possible, not allowed to), literally "that does not go" <=> Japanese:"ikemasen"(not allowed to), literally "can not go".
"There is general agreement on several typological similarities being widely found among the languages considered under Ural–Altaic:
head-final and subject–object–verb word order
in most of the languages, vowel harmony
morphology that is predominantly agglutinative and suffixing zero copula
non-finite clauses
lack of grammatical gender
lack of consonant clusters in word-initial position
having a separate verb for existential clause which is different from ordinary possession verbs like "to have""
It's actually even more complicated than that: yabanjin is a kan'on/Tang dynasty era borrowing, so it came from the Middle Chinese spoken in Chang'an/Xi'an around the 8th century, which would have been quite different from the modern Mandarin yemanren.