The Holocaust 83 Second World War 70 Europe 39 c 1940 to c 1949 39 History 37 European history 33 Social groups: religious groups and communities 25 Jewish studies 22 Modern warfare 21 Relating to Jewish people and groups 19 c 1938 to c 1946 (World War Two period) 19 20th century history: c 1900 to c 2000 16 Social & cultural history 15 History and Archaeology 12 Literary studies: general 12 Genocide & ethnic cleansing 11 Philosophy 11 Cultural studies 10 Judaism 10 Literature & literary studies 10 Literature: history & criticism 10 21st century history: from c 2000 - 8 Fascism & Nazism 8 Historiography 8 20th century, c 1900 to c 1999 7 International relations 7 Literary studies: from c 1900 - 7 Museology & heritage studies 7 Slovenia 7 Sociology & anthropology 7