The lifespans of ancient civilzations

[rashore]

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One way to look at the rise and fall of past civilisations is to compare their longevity. This can be difficult, because there is no strict definition of civilisation, nor an overarching database of their births and deaths.

In the graphic below, I have compared the lifespan of various civilisations, which I define as a society with agriculture, multiple cities, military dominance in its geographical region and a continuous political structure. Given this definition, all empires are civilisations, but not all civilisations are empires. The data is drawn from two studies on the growth and decline of empires (for 3000-600BC and 600BC-600), and an informal, crowd-sourced survey of ancient civilisations (which I have amended).

• Read the full article about this graphic and the stresses behind the demise of civilisations.

http://www.bbc.com/future/story/20190218-the-lifespans-of-ancient-civilisations-compared