Relaciones de caso y extensión de la concordancia en el español peninsular y el portugués europeo

Western Andalusian and European Portuguese only rely on a single plural pronoun in their address system (ustedes/vocês) which can induce two different agreement types: (i) the second person plural (following the semantics of the address system) and (ii) the third person plural (following their syntax). These two agreement patterns have not been studied in depth and, consequently, we did not know what factors underlie this variation in agreement. In this paper, I study the linguistic spread of these agreement patterns as well as the theoretical factors that led to this variation in use.