What political and social issues would have made the topic of human sacrifice pertinent to the fifth-century Athenian audience?

Does this play corroborate a commonly held belief that the house of Atreus (Agamemnon's family) was unavoidably doomed? Explain your answer.

What is the effect or role of Orestes's temporary madness upon the rest of the play Why is this detail included?

Does this play, in your opinion, effectively meet Artistotle's criteria for a tragedy, meaning that it purges the emotions of pity and fear through raising them? Does it effectively portray a change of fortune that is resolved in a recognition scene?