Revolutions, uprisings, rebellions 9 European history 5 Russian Revolution 4 20th century history: c 1900 to c 2000 3 Revolutionary groups & movements 3 Social & political philosophy 3 Socialism & left-of-centre democratic ideologies 3 Early history: c 500 to c 1450/1500 1 History of the Americas 1 Marxism & Communism 1 Medieval history 1 Modern history to 20th century: c 1700 to c 1900 1 Political ideologies 1 Political structure & processes 1 Portugal 1 Public ownership / nationalization 1 Regional & national history 1 Social & cultural history 1 Social groups 1