The Syntax of Agreement and Concord'Agreement' is the grammatical phenomenon in which the form of one item, such as the noun 'horses', forces a second item in the sentence, such as the verb 'gallop', to appear in a particular form, i. e. 'gallop' must agree with 'horses' in number. Even though agreement phenomena are some of the most familiar and well studied aspects of grammar, there are certain basic questions that have rarely been asked, let alone answered. This book develops a