Complex sentence: Independent pronouns are used when the pronoun is acting in a true noun states so it is the subject of a sentence, object of a verb or indirect object of a verb or the object of a preposition.
Split into simpler sentences: Independent pronouns are used when the pronoun is acting in a true noun state. This means that it is the subject of a sentence, object of a verb or indirect object of a verb or the object of a preposition.