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5 - Empires

Definitions, Measurements, and Growth–Decline Curves

from Part II - Empire Growth

Published online by Cambridge University Press:  21 June 2024

Rein Taagepera
Affiliation:
University of California, Irvine
Miroslav Nemčok
Affiliation:
University of Oslo, Norway
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Summary

The size of states, including empires, is measured by two crude measures: their area and their population. Areas graphed over time represent the growth–decline curves of empires. These are the basic portraits of empires, showing at a glance how rapidly they formed, how large they became, and how long they lasted. Measuring areas in historical atlases supplies most data. Rome, Ottoman, and Manchu Qing offer examples of completed life cycles. Russia and the USA show curves still incomplete. The beginnings of these curves often approximate the “simple logistic” pattern typical of growth of bacteria colonies when they have plenty of food but space is limited. A table lists the following characteristic of 98 major empires during the last 5000 years: maximum size, duration at least at one-half of maximum size, and rise time from 20−80% of maximum size. Of these, 20 are Runner Empires (3000 to 600 BCE), 66 are Rider Empires (600 BCE to 1800 CE), and 12 are Engineer Empires (from 1800 on).

Type
Chapter
Information
More People, Fewer States
The Past and Future of World Population and Empire Sizes
, pp. 60 - 76
Publisher: Cambridge University Press
Print publication year: 2024

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