Why does Euripides put the following speech into the mouth of Andromache, in his play of the same name?
Andromache: (Breaking into a rage) Inhabitants of Sparta, most hated men on earth, devious plotters, masters of lies, hatcher’s of wicked schemes, whose thoughts are twisted and rotten, never direct, your successes in Greece are built on crimes! Every vice belongs to you, you commit murder without end and know no shame in seeking your profit. Constantly you are discovered saying one thing but thinking another. I curse you! I am not appalled by the prospect of death as you suppose ... there will be no words of flattery on my tongue when I take leave of you ... do not take any pleasure from my present misery - it may come to you also.
What I'm interested in is answer that reflects the historical circumstances within which the play was written, that is the Peloponnesian Wars where Attica tore itself apart in civil warfare leading to the deaths of roughly 250,000 men, women and children and with the death of democracy and the rise of Macedonia, led by Alexander and which appeared to model itself upon the Persian empire. Also any other substantiating evidence in connection with any other plays that Euripides wrote on the same subject would be useful.