History -- Economic conditions -- 17 Economic conditions 10 Politics and government -- 10 Social conditions 7 Politics and government 6 Social conditions -- 5 more ... Foreign relations -- 3 History 3 Socialism -- 3 Foreign relations 2 20th century 1 Autonomy and independence movements 1 Baltic States -- 1 China 1 Chinese -- 1 Civilization -- 1 Colonies -- 1 Communism -- 1 Democracy -- 1 Ecology 1 Ethnic relations 1 George V, 1910-1936 1 George VI, 1936-1952 1 Human rights -- 1 Japanese occupation, 1942-1945 1 Later le dynasty -- 1 Maps 1 Political science -- 1 Politics and governement -- 1 less ...