Foreign relations 47 History 42 World War, 1939-1945 38 Thesis 25 Dissertations, Academic 21 Economic conditions 18 Politics and government 15 Japan 14 Military policy 13 Industrial management 11 Biography 10 Campaigns 10 National security 9 Foreign economic relations 8 Economic policy 7 Atrocities 5 Civilization 5 Defenses 5 Relations 5 Social conditions 5 Commerce 4 Emperors 4 History, Military 4 Juvenile literature 4 Management 4 Naval operations, Japanese 4 20th century 3 Aerial operations 3 Airplanes, Military 3 Allied occupation 3