Ancient societies were all religious, which meant that morality was taught with a divine and cosmic basis.
Whatever the specifics of moral socialization between different religions, places, and times; morals would be related back to an underpinning of spirits, god/s, creation, afterlife etc.
Modern societies are not religious; and whether or not a particular society professes or practices a specific (or several) religion makes no qualitative difference.
(In modern societies; religion is functionally nothing more than a lifestyle-choice.)
Consequently, the actual moral socialization of modernity is underpinned by psychology; not by theology or cosmology.
Although modern morality varies over time and between places; morality is related back to altruism and utilitarianism.
That is to say, modern morality is "about" such principles as unselfishness, helping-others; and making a "better world" - i.e. a world where people (or at least the people that most matter) suffer less, and are more fulfilled.
Much of everyday and official moral discourse is at a more superficial or secondary level than described above - a level that could be termed "ethical".
For example in ancient societies there is usually an ethical emphasis on loyalty and duty; but in the modern West, there are dominant concepts such as social justice, equality, democracy, inclusivity etc...
But these everyday "issues" operate on the assumptions of fundamental moral assumptions; and in this ultimate aspect; modern society is qualitatively distinct from ancient societies.
Consequently, most modern people - esepcially in the most deeply and extensively modern societies of the West - simply cannot comprehend the morality and ethics of ancient (and less-modern) societies. We "project" our distinctively modern moral assumptions back onto the past and onto non-modern societies; and find the past wanting.
Modern societies are inevitably regarded as morally superior in the light of modern morality.
Differences between ancient and modern are therefore put down to the ignorance or evil of people in the past.
But whether caused by ignorance or evil, either way, it is the self-experienced ethical duty of modern societies to eliminate any existing effects of the necessarily-wrong morality of the past.
Hence modern societies' zealous, purposive, incremental, accelerating obliteration of the past - by bowdlerization, censorship, removal, destruction...
If moral ignorance is assumed to be the cause of inferiority among currently-existing societies or social groups, then it is the ethical duty of mortally-superior modern people to instruct and/or regulate the ignorant.
And to eliminate those judged to be evil.
This is what modern societies do to "less developed" societies - i.e. to societies in which the ancient morality of religion (any religion) still has significant influence.
It is on this basis that modern people regard everybody in the past, and everybody not in the modernized Western world; as ethically and morally inferior - and in need of instruction, control, or elimination.
Such a process of incentivized or coercive imposition of Western values upon any and all religion-based values is regarded an absolute ethical duty; an imperative underpinned by morality rooted in psychology; and structured by the metaphysical assumptions of atheistic materialism.
Such forms the core ethical justification for the most of contemporary geopolitics; including its burgeoning international (undeclared and proxy) wars, sanctions and "aid"; covertly initiated and sponsored revolutions/ democratic procedures/ mass media - and the rest of it.
All these are ultimately a strategy of the Agents of Chaos which is why Western interventions invariably result in generalized destruction (at home, as well as abroad), and such supernaturally-motivated actions have recurred, again and again, over many decades and generations.
But in order to elicit co-operation from the totalitarian bureaucracies of the West (whether Left, Right, or Centre), a proximate ethical rationalization is needed; and this is provided by the basic structure of modern morality.












