Why does Clytemnestra kill Cassandra?

Clytemnestra kills Cassandra out of jealousy and rage. She views Cassandra, a Trojan princess and slave of Agamemnon, as a rival who threatens her position and relationship with her husband. Additionally, Clytemnestra believes that Cassandra's presence symbolizes Agamemnon's betrayal and infidelity, further fueling her desire for revenge. Ultimately, Cassandra's death serves as a manifestation of Clytemnestra's wrath and the tragic consequences of the family's cyclical violence.