Core / Periphery / Semi-Periphery
Quigley's spatial partition of every civilization into a core homeland, a semi-periphery, and an outer periphery — the engine of civilizational dynamics
Also known as: Core Empire, core area, core-periphery, core and peripheral areas, semiperipheral area
The Core / Semi-Periphery / Periphery distinction is Quigley's spatial framework for analyzing every civilization. The core is the original homeland in which the instrument of expansion first matured; the periphery is the outer zone settled or absorbed during the Age of Expansion; the semi-periphery sits between. Because the core institutionalizes first, the periphery routinely overruns it — a pattern Quigley traces across Mesopotamian, Classical, Western, Sinic, and other civilizations (EoC 136-141; T&H 19-21).
The Distinction
Quigley introduces the core/periphery framework in chapter 5 of The Evolution of Civilizations and restates it almost verbatim in the opening chapter of Tragedy and Hope. As a civilization passes through its Age of Expansion, it acquires "a kind of nuclear structure made up of an older core area (which had existed as part of the civilization even before the period of expansion) and a newer peripheral area (which became part of the civilization only in the period of expansion and later)" (T&H 19). For analytical refinement, Quigley adds a third ring — the semi-periphery — sitting between the two. The core is the place where the instrument of expansion was first assembled; the periphery is the territory it later swept into the civilization. This is not a vague metaphor: Quigley names the geographic boundaries of each ring for every civilization he analyzes.
Mechanism: Why the Periphery Overtakes the Core
The dynamism of the framework comes from a single mechanism: the core institutionalizes first. "When expansion begins to slow up in the core areas, as a result of the instrument of expansion becoming institutionalized," Quigley writes, "the peripheral areas continue to expand (by what is essentially a process of geographic circumvention) and frequently shortcut many of the developments experienced by the core area. As a result, by the latter half of Stage 3, the peripheral areas are tending to become wealthier and more powerful than the core areas" (EoC 137). The core, burdened by the entrenched interests built up during its own expansion, passes from Stage 3 to the Age of Conflict earlier than the periphery does. Imperialist wars then reduce the number of political units in the core; one state eventually emerges triumphant. That triumphant state, Quigley emphasizes, is almost never a core state: "When this occurs the core empire is generally a semiperipheral state, while the Universal Empire is generally a peripheral state" (T&H 21). The peripheral society entry covers this dynamic in more detail.
Geographic Examples Across Civilizations
Quigley names the boundaries precisely. For Mesopotamian civilization the core was the lower valley of the Tigris and Euphrates; the periphery included the highland zones, Iran, Syria, and Anatolia. For Cretan/Minoan civilization the core was the island of Crete and the periphery the Aegean islands and Balkan coasts. For Classical civilization the core was the shores of the Aegean Sea and the periphery the rest of the Mediterranean coastline, ultimately reaching Spain, North Africa, and Gaul. For Western civilization the core ran across northern Italy, most of France, the Low Countries, England, and extreme western Germany; the periphery covered the rest of Europe out to eastern Poland, plus the Americas and Australia (EoC 136-137; T&H 19-20). Canaanite civilization had its core in the Levant and its periphery in the western Mediterranean at Tunis, western Sicily, and eastern Spain.
The Conquest Pattern: Semi-Periphery Then Periphery
Quigley uses the three-ring model to explain a recurring sequence of conquests. The core is usually taken first by a semi-peripheral state; the whole civilization is later unified by a fully peripheral one. "Mesopotamia's core was conquered by semi-peripheral Babylonia about 1700 B.C., while the whole of Mesopotamian civilization was conquered by more peripheral Assyria about 725 B.C. (replaced by fully peripheral Persia about 525 B.C.). In Classical Civilization the core area was conquered by semiperipheral Macedonia about 336 B.C., while the whole civilization was conquered by peripheral Rome about 146 B.C." (T&H 21). In Sinic civilization the core was conquered by Chou about 1000 B.C., then by semi-peripheral Ch'in eight centuries later (221 B.C.); the whole was unified into a Universal Empire by the Han dynasty from its southern periphery (EoC 142). The Aztecs played the same role in Mayan civilization and the Incas in Andean civilization.
Application to the Modern West
Quigley applies the framework to the modern world without softening it. By the late nineteenth century, he argues, the original core of Western civilization — England and western Europe — had already begun passing into its third Age of Conflict, while the peripheries (most pointedly Germany, the United States, Russia, and Japan) were still in full expansion. The First and Second World Wars are, on this reading, peripheral states fighting over the wealth and political control of an already-institutionalized core — Germany the semi-peripheral aggressor; the United States and the Soviet Union the fully peripheral successor powers. "Western civilization did not have a full stage lag in its peripheral areas, but the lag was sufficiently prolonged to provide a masking influence on the demarcations of stages" (EoC 356), Quigley notes — the periphery's continued expansion long masked the fact that the core had already turned.
Cited in
- tragedy-and-hope · p. 19 Quigley
Importance because it gives the civilization a kind of nuclear structure made up of an older core area (which had existed as part of the civilization even before the period of expansion) and a newer peripheral area (which became part of the civilization only in the period of expansion and later). If we wish, we can make, as an additional refinement, a third, semiperipheral area between the core area and the fully peripheral area.
- tragedy-and-hope · p. 20 Quigley
In the latter part of the Age of Expansion, the peripheral areas of a civilization tend to become wealthier and more powerful than the core area. Another way of saying this is that the core passes from the Age of Expansion to the Age of Conflict before the periphery does.
- tragedy-and-hope · p. 21 Quigley
When this occurs the core empire is generally a semiperipheral state, while the Universal Empire is generally a peripheral state. Thus, Mesopotamia's core was conquered by semi-peripheral Babylonia about 1700 B.C., while the whole of Mesopotamian civilization was conquered by more peripheral Assyria about 725 B.C.
- evolution-of-civilizations · p. 136 Quigley
As a result of the geographic expansion of the society, it comes to be divided into two areas: the core area, which the civilization occupied at the end of Stage 2, and the peripheral area into which it expanded during Stage 3.
- evolution-of-civilizations · p. 137 Quigley
When expansion begins to slow up in the core areas, as a result of the instrument of expansion becoming institutionalized, and the core area becomes increasingly static and legalistic, the peripheral areas continue to expand (by what is essentially a process of geographic circumvention) and frequently shortcut many of the developments experienced by the core area.
- evolution-of-civilizations · p. 140 Quigley
Just as the core area passes from Stage 3 to Stage 4 earlier than the peripheral area does, so the core area comes to be conquered by a single state before the whole civilization is conquered by the universal empire.
- evolution-of-civilizations · p. 142 Quigley
This area was conquered by Chou about 1000 B.C. and by semiperipheral Ch'in from the mountains of Shensi eight centuries later (221 B.C.). The whole of Sinic society was then brought into a single universal empire by the Han dynasty from its southern periphery.
- evolution-of-civilizations · p. 356 Quigley
Western civilization did not have a full stage lag in its peripheral areas, but the lag was sufficiently prolonged to provide a masking influence on the demarcations of stages.