World War, 1914-1918 History 348 Politics and government 198 Causes 140 International relations 134 Foreign relations 128 Economic aspects 127 more ... Campaigns 104 Literature and the war 89 History and criticism 81 World War, 1939-1945 77 Territorial questions 72 Influence 70 Peace 68 Diplomatic history 57 Women 53 Social conditions 52 Economic conditions 49 Finance 47 Reparations 38 Reparations for historical injustices 38 Social aspects 37 Reconstruction (1914-1939) 34 Soldiers 33 War 32 World politics 30 Medical care 27 Naval operations 25 Neutrality 25 Sea control 25 less ...