- Society/ History/ By Time Period/ Twentieth Century/ Wars and Conflicts/ Balkan_Wars@ (9)
- Society/ History/ By Time Period/ Twentieth Century/ Cold_War@ (137)
- Society/ History/ By Time Period/ Nineteenth Century/ Wars and Conflicts/ Napoleonic_Wars@ (169)
- Regional/ Europe/ United Kingdom/ Northern Ireland/ Society and Culture/ Religious_and_Sectarian_Conflict@ (148)
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- Society/ History/ By Time Period/ Twentieth Century/ Wars and Conflicts/ World_War_II@ (1222)
- Society/ History/ By Time Period/ Twentieth Century/ Wars and Conflicts/ World_War_I@ (409)
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