Which group has been found to be more prone to warfare than contemporary society?

Question

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Research has shown that pre-agricultural hunter-gatherer societies were more prone to warfare than contemporary societies. This may be due to factors such as competition for resources and territorial disputes. Interstate actors and East Asian medieval societies also engaged in warfare, but not necessarily more so than contemporary society. Domestic political leaders can certainly contribute to instances of warfare, but they are not a distinct group from contemporary society as a whole.

Which Group Has Been Found to Be More Prone to Warfare