The answer is allegory, since allegory is a rhetorical device that convey hidden meanings through symbolic figures in a literary piece which create the meaning the author wants to portray. It is in a form of story or poem and the meaning could be political or moral, depending on the author's true meaning.
They couldn't write with letters so they drew pictures. Hardly anyone knows anything about the writings of Native american literature.
What type of verb is began?
Began and begun are two forms of the irregular verb begin. Began is the simple past conjugation. Began is not used with any helping verb. Begun is the past participle form. Begun must always have a helping verb to be correct.