GOVT AND SOCIATY OF ANCIENT CIVILISATION:what were the similarities between the government and society of the 3 ancient civilisation??

what were the similarities between the government and society of the 3 ancient civilisation??
They all had kings


what were the differences between the government and society of the 3 ancient civilisationS?
they ruled in a different method


how similar or different are their systems with sin??
they want their country to be better