Answer:
As the play begins, the English civil war has ended, and Richard is conspiring against his brothers to become the king of England.
Step-by-step explanation:
In medias res is a Latin phrase that means "into the middle of things." This describes a narrative that starts not at the beginning of the story, but somewhere in the middle. This means that there is important information and crucial events that occurred before the beginning of the story and that the reader needs to know about.