The aim of this dissertation is an analysis of agreement in relation to genitival constructions. It proposes that the Apulian non-prepositional enitives of San Marco in Lamis can be described as regulated by a definiteness agreement mechanism manifesting itself in the necessity of articled heads (excluding vocatives) and genitival nouns, coupled with an adjacency requirement which limits the realization of post-nominal modifiers of the head in a post-genitival position, where they might only refer to the genitive noun. This work thus (...) proposes that such agreement for definiteness is the same holding in Romanian non-al genitives which result in the linker construction when agreement is disrupted. In chapter 1 we thus introduce Kartvelian genitives by Suffixaufnahme which notoriously represent a genitive-head noun morphological agreement phenomenon. Plank (1995) also shows that in a series of genitives, Suffixaufnahme shows up only on the last one, demonstrating that when it comes to agreement in genitives, local dynamics of sorts are often at stake (as it happens with the Costruct State). In 2 we move to linkers; linkers have been connected to agreement in Suffixaufnahme genitives at least since Plank (1995) and later works such as Larson and Yamakido (2006), Manzini et al (2016), and Manzini (2018), according to which linkers can be assimilated to agreement. In fact, in synthetic systems such as Romanian and Aromanian, Albanian and Arbëresh, and Kurdish varieties, linkers agree for φ with either the head or the genitive noun. Giurgea and Dobrovie-Sorin (2013: 126) further show that in Romanian non-linker constructions possessives agree for case with the head noun. In linker constructions, agreement for case is not present: it’s the linker itself which agrees with the head noun, this time for φ. Chapter 3 deals with genitival modification in Hebrew and a number of Arabic varieties. It proposes that the pseudoprepositions found in Arabic varieties are nouns in the Construct State. This was previously proposed for Palestinian Arabic in Mohammad (1999), which also shows that such elements agree for φ with the modified noun. 3.2 takes into account the Semitic preposition l-, dealing with the question of whether this lement can be characterized as possessive and locative as it happens for Romance a. 4 analyzes Apulian non-prepositional genitives and proposes as anticipated that the necessity of articled nouns in the construction is to be linked to an agreement relation taking place via D. Lastly, 5 subsumes the conclusions of this work. (shrink)