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| World War I - Overviews |
| Diplomatic Background | Military History | Economic History | Social Implications |
| The Colonies | Legacy |
| World War I by Country : Central Powers |
| Germany | Austria | Hungary | Ottoman Empire | Bulgaria |
| World War I by Country : the Entente |
| Serbia | Russia | France | Britain | Belgium | Italy |
| Montenegro | Rumania | Japan | USA |
| World War I by Country : Neutral States |
| Netherlands | Denmark | Norway | Sweden | Switzerland | Spain |
| Portugal | Albania | Greece |
| World War I : Striving for Independence |
| Ireland | Finland | Estonia | Livonia | Courland | Lithuania |
| Poland | Slovakia | Czech Lands | Croatia | Slovenia | Bosnia |
| Arabia | Eastern Anatolia | Russ. Caucasus |
| World War I elsewhere |
| On the Oceans | In Africa | In China | In the Pacific |
| Post-War Turmoil |
| Russian Revolution | Revolutions elsewhere | Russian Civil War | Inflation | Border Conflicts |
| The Impact of World War I elsewhere |
| North America | Caribbean | Central America | South America | Western Africa | Southern Africa |
| Eastern Africa | Northern Africa | Central Asia | Greater India | Southeast Asia | Oceania |
| China | Korea |
| EXTERNAL FILES |
World War I : Trenches on the Web |
| DOCUMENTS | World War I Document Archive at BYU |
| REFERENCE |
