Those of you who are into the subject of history, tell me if this seems like an accurate generalized accounting for the origins of civilized social organization. What, if anything, does this basic assessment lack, spirituality's role, or something else maybe?

Local leadership traditions - patriarchs, chiefs, shamans and the like - gave way to acquisitive governments intended to facilitate wars and control of previously foreign territory in the most fertile and crowded regions of the world, such as ancient Egypt, Mesopotamia, India, the Far East, Minoan Crete, Olmec Mexico and Chavin Peru. As infrastructure advanced in many locations, with roads, the wheel, and domestication of animals for purposes of transport, it became possible to occupy rival lands, export political institutions to serve one’s own interests, and maintain a superiority in wealth by dictating the parameters of trade.

Financial inequality imposed by imperial governing concentrated riches in the hands of what at first were ethnicity-based ruling castes, the most obvious example being Mesopotamia, as Sumerians, Akkadians, Babylonians, Hittites and Assyrians rose to relative supremacy at various times by way of conquest, and as these tribes formerly separated by geographic distance merged into a more homogenously ethnic culture, racial divides gave way to enduring class distinctions based upon prestige, political power and economic status. Antiquity's many cultures took their turn invading and conquering, migrated on large scales in peacetime, and ultimately blended, but as economies and the technology underpinning them diversified, populations differentiated into more complex forms of social organization based around socioeconomic stratification - classes - and intricate legal criteria defining status in a plethora of social contexts. Civilized living required increasingly specialized skills, dividing sub-cultures internally because of a multiplying of professions and additional roles, especially in the mid to lower labor demographics, a disunity that allowed upper-class demographics, which had originated as conquering plunderers, to opportunistically refashion their armed pursuits into institutional enforcement of economic and political authority.