The essay is historical but also political (in a non-emotional way) in outlook.
I have been reading the twenty-six page essay, The Fate of Empires and Search for Survival by Sir John Glubb. I found it very interesting. Summary below to whet your interest. If anyone would like to read it, I believe I can email you a pdf copy (you'd have to PM me an emal addy; I don't think I can post a pdf link on GN). If my memory serves, the essay was written in the 1970s.
Summary
As numerous points of interest have arisen
in the course of this essay, I close with a brief summary, to refresh the reader’s mind.
(a) We do not learn from history because our studies are brief and prejudiced.
(b) In a surprising manner, 250 years emerges as the average length of national greatness.
(c) This average has not varied for 3,000 years. Does it represent ten generations?
(d) The stages of the rise and fall of great nations seem to be:
The Age of Pioneers (outburst) The Age of Conquests
The Age of Commerce
The Age of Affluence
The Age of Intellect
The Age of Decadence.
(e) Decadence is marked by:
Defensiveness
Pessimism
Materialism
Frivolity
An influx of foreigners
The Welfare State
A weakening of religion.
(f) Decadence is due to:
Too long a period of wealth and power Selfishness
Love of money
The loss of a sense of duty.
(g) The life histories of great states are
amazingly similar, and are due to internal factors.
(h) Their falls are diverse, because they are largely the result of external causes.
(i) History should be taught as the history of the human race, though of course with emphasis on the history of the student’s own country.