What Influenced the Play?Queen Elizabeth I of England was dying. She had no children and hence no heir to her throne. So, she named James VI of Scotland as her successor (he ended up becoming James I of England).
It was a warm, summer night (I think... who knows?

), in August 1606. James was at Hampton Court watching the play Macbeth, accompanied by his brother-in-law, King Christian of Denmark. Now... James was familiar with the play. Macbeth was, after all, a new play regarding an old story (Shakespeare found the story in
The Chronicles of Scotland by Raphael Holinshed) - it was about James' ancestors, Banquo and Fleance, through whom he inherited the throne of Scotland. Shakespeare's play, however, was a much much more dramatic re-writing of the historical facts. He had made many changes; most of which concerned James' ancestor, Banquo. In the true story, Banquo assisted Macbeth in the murder of King Duncan; idk about you, but Shakespeare thought that it would be best to not suggest that James descended from a regicide. Instead, Shakespeare decided to play it safe, and in his play Banquo does not assist Macbeth in the murder of Duncan; instead, he is innocent. Furthermore, in order to get on James' good side, the play contains some flattery. James believed that he descended (spiritually) from the long tradition of English monarchs, and that he had possed the power of healing that Edward the Confessor (1042-66) had possessed. Shakespeare's description of this power (in Act IV, Scene iii, lines 148-58 --> may be different depending on what version you are reading) may be described as deliberate flattery of his king. Additionally, you know the three witches? Well, James was extremely interested in witchcraft (he even wrote a book on it!); Shakespeare knew this and used it to his advantage.
However, Macbeth is more than just flattery for an ancient British monarch. Although it is based largely on historical fact, it should not be read as history. Rather, it should be interpreted as a moral lesson. It, like many of the popular dystopian texts we read/watch/listen to today (e.g. The Walking Dead, The Hunger Games, Divergent, Maze Runner...) explore 4 main concepts. These being: human nature, free-will vs determinism, power and powerlessness, and consciousness and morality. Although Macbeth is very different from texts we engage with nowadays, these 4 main concepts withstand the test of time.
Through the murder of Duncan, Macbeth explores an old lesson - crime does not pay. To murder anyone is a crime, but those in the Elizabethan era believed that the murder of a king was the greatest of all crimes. They believed that kings were appointed by God to rule as His deputies, thus rebelling against a king meant rebelling against God.
The play, Macbeth, also exhibits influence from cultural assumptions of the society in which Shakespeare lived. Characters such as Lady Macbeth fight against the prevailing expectations of how women should behave in society. Furthermore, potentially due to religious influence, female characters are depicted as the root of all chaos and evil (á la Eve).