History 29 Socialism & left-of-centre democratic ideologies 15 Politics & government 13 20th century history: c 1900 to c 2000 12 European history 12 Marxism & Communism 12 Social & cultural history 11 Political science & theory 10 The Holocaust 10 Fascism & Nazism 8 Social & political philosophy 7 Society & social sciences 7 History of the Americas 6 Second World War 6 Biography: historical, political & military 5 General & world history 5 Literature & literary studies 5 Political parties 5 Political structure & processes 5 Cultural studies 4 Ethnic studies 4 Literary studies: general 4 Political ideologies 4 Postwar 20th century history, from c 1945 to c 2000 4 Revolutions, uprisings, rebellions 4 Russian Revolution 4 Social & cultural anthropology, ethnography 4 Sociology 4 Asian history 3 Economic theory & philosophy 3