Revolutions, uprisings, rebellions 30 European history 13 History and Archaeology 5 Russian Revolution 5 1917-1923 (Russian Revolutionary period) 4 20th century history: c 1900 to c 2000 4 History of medicine 4 History of the Americas 4 Russia 4 Early modern history: c 1450/1500 to c 1700 3 Left-of-centre democratic ideologies 3 Revolutionary groups & movements 3 Revolutionary groups and movements 3 Social & political philosophy 3 Social and cultural history 3 Social and political philosophy 3 Socialism & left-of-centre democratic ideologies 3 c 1500 onwards to present day 3 20th century, c 1900 to c 1999 2 Biology, life sciences 2 British & Irish history 2 Early history: c 500 to c 1450/1500 2 France 2 General and world history 2 Marxism & Communism 2 Medieval history 2 Middle Eastern history 2 Philosophy of religion 2 Political structure & processes 2 Political subversion 2