Which two key events had a direct impact on the tragedy at the end of romeo and juliet

Romeo killing Tybalt and Friar John being quarantined are two key events that impact the final tragedy. Romeo faces banishment and separation from Juliet after he kills Tybalt. Tybalt’s death also results in Lord Capulet’s decision to force Juliet to marry Count Paris. When Friar John is quarantined due to the plague, he is unable to deliver Friar Laurence’s letter to Romeo. Romeo believes the news that Juliet is dead and makes the hasty decision to kill himself to join her in death.

the red coloration of the lungs looks alarming and adds to the overall message that the flu is threatening apex