In Romeo and Juliet, Shakespeare chooses to announce the play's tragic ending in the prologue of the play, before any of the action even starts. What does Shakespeare most accomplish by giving away the ending of the plot in this way?

By giving away the ending of the plot in the prologue of the play "Romeo and Juliet", Shakespeare:

He creates dramatic irony because the audience knows the two young lovers are fated to die.

Explanation:

Dramatic irony is the type of irony in which the audience knows more than the character. In the play "Romeo and Juliet" the dramatic irony makes the audience feel for sympathetic for the lovers. Also, it makes the audience feel more connected to the plot by knowing the end from the initial part of the play.

By revealing the end Shakespeare creates dramatic irony for the whole story because the audience already knows the two young lovers are fated to die.