Study links fear of conflict to population changes in Neolithic Europe

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Study links ***** of conflict to population changes in Neolithic Europe

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Visualization of situation around 3700 BCE. Credit: Magistrat der Stadt Hofheim; LEIZA-Leibniz-Zentrum für Archäologie, Architectura Virtualis 2020 www.leiza.de/kapellenberg

Since the end of the last Ice Age, growth of the human population has been far from uniform, marked instead by periods of rapid expansion followed by sharp declines. The reasons behind these fluctuations remain only partially understood.

Previous research by CSH scientists Peter Turchin, Daniel Kondor, and an international team of collaborators, has demonstrated that social conflicts, rather than—or in addition to—environmental factors, could have significantly impacted these patterns. Now, they add another piece to the puzzle.

Wars and conflicts not only cause direct casualties but also create an atmosphere of distress and *****. This *****, by affecting where and how people settle, could have influenced substantially how the population in Europe developed, as shown in a study

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in the Journal of the Royal Society Interface.

Flight and overpopulation

“Globally, scientists have extensively studied and debated the presence and role of conflicts in prehistory. However, estimating their effects, such as those on population numbers, is still difficult,” explains Daniel Kondor from CSH. “This is even more complicated by potential indirect effects, like people who—out of *****—leave their homes or avoid certain areas.”

These indirect impacts of conflict could have caused significant, long-term population fluctuations in non-state societies, such as in Neolithic Europe (circa 7000 BC to 3000 BC), according to the study’s findings.

“Our model shows that ***** of conflict led to population declines in potentially dangerous areas. As a result, people concentrated in safer locations, such as hilltops, where overpopulation could lead to higher mortality and lower fertility,” Kondor explains.

Matches archaeological evidence

The ongoing threat would prevent the settlement of much of the remaining land. Co-author Detlef Gronenborn from the Leibniz Centre for Archaeology (LEIZA) in Mainz, Germany, says, “The results from the simulation studies nicely match empirical evidence from archaeological field work, like for instance the Late Neolithic site of Kapellenberg near Frankfurt, dating to around 3700 BCE.

“Like there, we have many instances of a temporal abandonment of open agricultural land, associated with a retreat of groups to well-defendable locations and considerable investments in large-scale defense systems like ramparts, palisades and ditches.”

“This concentration of people in specific, often well-defended locations could have led to increasing wealth disparities and political structures that justified these differences,” adds Peter Turchin from CSH. “In that way, indirect effects of conflict might have also played a crucial role in the emergence of larger political units and the rise of early states.”

Complexity science meets archaeology

To simulate population dynamics in Neolithic Europe, the researchers developed a computational model. To test the model, they utilized a database of archaeological sites, analyzing the number of radiocarbon age-measurements from various locations and time periods, under the assumption that this reflects the scale of human activities, and thus, ultimately, population numbers.

“This allows us to examine the typical amplitudes and timescales of population growth and decline across Europe,” Kondor explains. “Our goal was for our simulation to reflect these patterns.”

In the future, the model could help interpret archaeological evidence, such as signs of overpopulation or land use patterns, which in turn can provide necessary context and data for further refinements to modeling. This is a typical example of interdisciplinary collaboration that CSH aims to foster.

“Using complexity science methods, we develop mathematical models to analyze the rise and fall of complex societies and identify common factors,” Turchin explains. This involves collecting vast amounts of historical data, managed in specialized databases like the Seshat Global History Databank.

“For the most complete picture possible, direct collaboration with archaeologists is immensely important. This study is a great example of the potential that such interdisciplinary collaboration can have,” Kondor emphasizes.

More information:
Landscape of *****: Indirect effects of conflict can account for large-scale population declines in non-state societies, Journal of the Royal Society Interface (2024).

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Study links ***** of conflict to population changes in Neolithic Europe (2024, August 28)
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#Study #links #***** #conflict #population #Neolithic #Europe

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