Second World War 11 History 10 Ancient history: to c 500 CE 9 Political oppression & persecution 8 The Holocaust 8 Slovenia 7 European history 6 Humanities 5 Jewish studies 5 Religious intolerance, persecution & conflict 5 Fascism & Nazism 4 Society & social sciences 4 20th century history: c 1900 to c 2000 3 Christianity 3 Genocide & ethnic cleansing 3 International human rights law 3 Refugees & political asylum 3 Religious groups: social & cultural aspects 3 The Early Church 3 War crimes 3 Austria 2 Biography: historical, political & military 2 Classical history / classical civilisation 2 Collected biographies 2 Educational psychology 2 General & world history 2 Islam 2 Marxism & Communism 2 Middle Eastern history 2 Migration, immigration & emigration 2