We construct a database linking European royal kinship networks, monarchies, and wars to study the effect of family ties on conflict. To establish causality, we exploit decreases in connection caused by apolitical deaths of rulers’ mutual relatives. These deaths are associated with substantial increases in the frequency and duration of war. We provide evidence that these deaths affect conflict only through changing the kinship network. Over our period of interest, the percentage of European monarchs with kinship ties increased threefold. Together, these findings help explain the well-documented decrease in European war frequency. (JEL D74, N33, N34, N43, N44, Z12, Z13)

中文翻译：

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权力网络：欧洲的亲属关系和冲突，1495-1918

我们构建了一个连接欧洲皇室亲属关系网络、君主制和战争的数据库，以研究家庭关系对冲突的影响。为了建立因果关系，我们利用了由统治者共同亲属的非政治性死亡引起的联系减少。这些死亡与战争频率和持续时间的大幅增加有关。我们提供的证据表明，这些死亡只能通过改变亲属关系网络来影响冲突。在我们感兴趣的时期，有亲属关系的欧洲君主的比例增加了三倍。总之，这些发现有助于解释有据可查的欧洲战争频率下降的原因。(JEL D74、N33、N34、N43、N44、Z12、Z13)