Who forced Macbeth to be king?

Answer 1

Nobody forced him. With Duncan dead, the kingship would be offered to one of Duncan's nearest relatives. He had, with his usual inability to judge character, nominated his son Malcolm as king by making him Prince of Cumberland. However Malcolm and his brother Donalbain have fled the country and are the prime suspects in the murder, so who's the next best candidate for kingship? How about the king's cousin, a war hero, devoted to Scotland and admired by all? As Ross says, "Then 'tis most likely the sovereignty will fall on Macbeth." Macbeth was next in line, and he wanted the crown--there was no forcing involved.

Answer 2

The Witches in Shakespeare's play "Macbeth" planted the idea in Macbeth's mind that he would become king. Lady Macbeth also played a significant role in convincing and manipulating Macbeth to take action to fulfill this prophecy. Ultimately, it was Macbeth himself who made the choice to pursue the throne through violent means.