20th century history: c 1900 to c 2000 1 European history 1 General & world history 1 Genocide & ethnic cleansing History 1 History of sport 1 History of the Americas 1 History: earliest times to present day History: theory & methods 1 Local history 1 Military history 1 Oral history 1 Postwar 20th century history, from c 1945 to c 2000 1 Regional & national history 1 Second World War 1 Social & cultural history 1 The Holocaust 1