I saw the sentence: "the crowd took its guns and its swords" in French the other day; now I'm wondering if it's right in English. Since the crowd is singular, why do we say "their guns and their swords"?
This question is asking about pronoun agreement. The linked-to answer concerns verb agreement. In addition the answers there say that verb agreement may be driven by pronoun agreement later in the verb phrase! So it seems that the answers there presuppose the possible existence of plural pronouns, but don't say when or why PRONOUNS (not verbs) should be plural in the case of mass nouns.