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xSub /cross-sub.org/ is a repository of micro-level, subnational event data on armed conflict and contention around the world. Our goal is to preserve and consolidate multiple open-source data collections in one comprehensive electronic archive, creating a “database of databases” for purposes of research, education, policy-making and evaluation.

The archive currently includes data on armed conflict and contention from 156 countries (1969-2017), from 21 data sources, including both large data collections and individual scholars. The data are available as individual events, and as analysis-ready spatial panel datasets. To facilitate comparisons across countries and sources, xSub organizes these data into common units of analysis, by space (country, province, district, grid cell, electoral constituency) and time (year, month, week, day). We also provide several pooled, multi-source versions of the data for every country.

The data are available to download, at no cost, from the data page or through the xSub R package (Stata code also available here). For more information, please see our introductory article and appendix.

We also welcome submissions of original data for potential inclusion in the xSub archive. For details, please see the data upload page.

The co-directors of the xSub project are:

Yuri M. Zhukov, University of Michigan
Christian Davenport, University of Michigan

Our chief data scientist is Nadiya Kostyuk, University of Michigan.

xSub is grateful for support received from the Center for Political Studies at the Institute for Social Research, and the Department of Political Science at the University of Michigan, and to our many contributors and partners.