Who does macbeth murder to keep the witch prophesies from coming true

He kills Duncan to become king and Banquo to stop banquo becoming king as the witches prophesies told

Hope this makes sense and helps

Allusion and illusion. an allusion is an indirect reference, whereas an illusion is something that is unreal or incorrect. each of the nouns has a related verb form: allude “to refer indirectly to,” and illude (not a very common word), which may mean “to delude or deceive” or “to subject to an illusion.”