Answer:
Duncan’s decision to name Malcolm as his successor
The witches’ prophecy about Macbeth's future
Explanation:
Macbeth is a general in the kingdom of Scotland who, through manipulation and greed, commits murder to become the king of Scotland. When in the beginning of the play, the three witches predicted the future of Macbeth, he thinks of himself as immortal. Added to that, Duncan, the previous king of Scotland announced that he be succeeded by his son Malcolm. Fearing that the witches' predictions may not come true if Malcolm becomes kings, he murdered whoever came in his way, killing Duncan, Banquo even though they were friends and his son, Fleance.
