Shahnameh by Abolqasem Ferdowsi — Read

What was said in that Book of the Righteous, concerning ancient times? What does it say about the period after Sekandar had gone? Who occupied the throne then? A knowledgeable landowner from Chach put it like this: no one occupied the ivory throne. The chieftains who claimed descent from Arash, who were a valiant, impulsive, and stubborn clan, were scattered about in different corners of the world, each of them cheerfully ruling a petty kingdom. Collectively they were called the "kings of the peoples."

And so two hundred years went by: you'd say / That monarchy itself had passed away. / The local chiefs were happy to ignore / Each other, and the earth was cleansed of war. / Sekandar had foreseen and planned this peace / To safeguard the prosperity of Greece.