The “West Asian Cluster” is a term that I use to identify the several early civilizations that emerged in Mesopotamia, Egypt, and Anatolia (cf. my remarks on the west Asian cluster in The Seriation of Western Civilization and The Philosophical Basis of Islamic State). Whereas civlization emerged independently in geographically isolated regions scattered across the planet, in the case of the west Asian cluster, these civilizations seem to have arisen in concert and to have been in contact with each other throughout their development.

A nomadic or pastoral people, accustomed to walking, would readily have traveled between the regions of the west Asian cluster. Moreover, we know that long-distance trade routes that preceded civilization ran through the area. Distinctive forms of obsidian were traded over long distance, and examples can be traced back to their source. These trade routes likely remained in place as civilization developed in the region, probably expanding as more manufactured goods became available for trade, and these trade routes could have served as vectors for idea diffusion throughout the region.

Thus I assume that continuous idea diffusion within the region meant that whenever a civilized innovation emerged in one location within the cluster, that it was picked up relatively rapidly by other locations in the cluster. In this way, civilization in the region likely developed in a kind of reticulate pattern, rather than in a unitary and linear manner, so that, if we were in possession of all the evidence, we might find a series of developments took place in sequence, but not necessarily all originating in a single civilization. Developments were likely distributed across the several different civilizations, and disseminated by idea diffusion until they reached all the others. This could be called a seriation of distributed development.

As these civilizations rose in concert, it seems that they also fell in concert, in an event that is sometimes called the Late Bronze Age (LBA) collapse. Previously in Epistemic Collapse I mentioned Eric H. Cline’s book, 1177 B.C.: The Year Civilization Collapsed, which deals with this period of history. Near the end of the book Cline wrote:

“…for more than three hundred years during the Late Bronze Age — from about the time of Hatshepsut’s reign beginning about 1500 BC until the time that everything collapsed after 1200 BC — the Mediterranean region played host to a complex international world in which Minoans, Mycenaeans, Hittites, Assyrians, Babylonians, Mitannians, Canaanites, Cypriots, and Egyptians all interacted, creating a cosmopolitan and globalized world system such as has only rarely been seen before the current day. It may have been this very internationalism that contributed to the apocalyptic disaster that ended the Bronze Age. The cultures of the Near East, Egypt, and Greece seem to have been so intertwined and interdependent by 1177 BC that the fall of one ultimately brought down the others, as, one after another, the flourishing civilizations were destroyed by acts of man or nature, or a lethal combination of both.”

Eric H. Cline, 1177 B.C.: The Year Civilization Collapsed, Princeton and Oxford: Princeton University Press, 2014, p. 171

If, as I suggested above, the development of these intertwined civilizations was reticulate, one would not be surprised that their collapse was also reticulate, distributed throughout the region, following from multiple causes and cascading into multiple consequences — a seriation of distributed collapse. If we think of this as an ecosystem of civilizations, it is easy to think of the LBA collapse as a mass extinction of civilizations. Species, like civilizations, arise in concert, embedded in coevolutionary contexts, not only evolving along with other species, but also with the inorganic environment. When a food web catastrophically collapses, it brings down many species because of their interdependence, and the same may be true of civilizations within their coevolutionary context.

What exactly is a mass extinction? Here is a discussion of definitions of mass extinctions:

“[Sepkoski] defines mass extinction as any substantial increase in the amount of extinction (that is, lineage termination) suffered by more than one geographically widespread higher taxon during a relatively short interval of geological time, resulting in at least temporary decline in their standing diversity. This is a general definition purposefully designed to be somewhat vague. An equally vague but more concise one offered here is that a mass extinction is an extinction of a significant proportion of the world’s biota in a geologically insignificant period of time. The vagueness about extinctions can be dealt with fairly satisfactorily in particular cases by giving percentages of taxa, but the vagueness about time is more difficult to deal with. A significant question about mass extinctions is how catastrophic they were, so we also require a definition of catastrophe in this context. According to Knoll (1984), it is a biospheric perturbation that appears instantaneous when viewed at the level of resolution provided by the geological record.”

A. Hallam and P. B. Wignall, Mass Extinctions and their Aftermath, Oxford: Oxford University Press, 1997, p. 1

The last of these definitions could be adapted to the mass extinction of civilizations: a social perturbation that appears instantaneous when viewed at the level of resolution provided by the historical record. This isn’t exactly right, as we know that it takes time for civilizations to collapse, but if we soften the “instantaneous” to “rapidly” it works, after a fashion. And the authors of this passage openly recognize the ambiguity of time in the definition.

Have there been other mass extinctions of civilizations in history? If we think of the interconnected Mediterranean Basin in Late Antiquity, the collapse of Roman power in the west would constitute a mass extinction of civilizations of the region, though if we count this as a single Hellenistic civilization stretching across Europe into North Africa and West Asia, then it is only a singular collapse. Similarly, if we think of all the civilizations subsumed under Islamic rule during the greatest reach of Islamic civilization, its collapse might also be characterized as a mass extinction of civilizations.

Could a mass extinction of civilizations happen again? We face similar definitional challenges. Are we to consider the whole of planetary civilization as one civilization, or as several civilizations merged and subsumed? A catastrophic institutional collapse of planetary civilization today might be counted either as the collapse of one worldwide civilization or as several tightly-coupled civilizations, as interdependent as the civilizations of West Asia during the Late Bronze Age.

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