Contribution à un bilan méthodologique de la syntaxe de l'émergence diachronique du sujet obligatoire en français::e paramètre du sujet nul et le statut des clitiques

As any language French transformed over time. The evolution of French is marked by many phenomena at all organization levels. For syntax, these phenomena include from the medieval State to current state the assertive sentence of second verb schema change (where the verb should be preceded by a constituent, XVY) to SVO (where it is the subject that precedes the verb) and the passage of the optional expression required expression of the subject. The mandatory presence of the subject in current French is all the more remarkable that it distinguishes it from most other major contemporary romance languages that require explicit subject. This last group includes catalan, Spanish, Italian literary, some occitans, Portuguese, Romanian, and Sardinian, dialects French hugging with the florentin franco-provençal, some other occitans dialects Mediterranean Italian dialects and the ladin following Vanelli, Renzi and Beninca (1985/1985).