History 455 Politics and government 52 World War, 1914-1918 36 Communism 33 Social conditions 31 Foreign relations 28 Influence 24 more ... Causes 15 Socialism 15 International relations 13 Diplomatic relations 12 Economic conditions 10 Revolutionaries 10 Historiography 9 Influence (Literary, artistic, etc.) 9 Jews 9 Political and social views 9 Intellectual life 8 Political activity 8 Political culture 8 Refugees 8 History and criticism 7 History, Military 7 Literature and the revolution 7 Peasants 7 Russians 7 Social aspects 7 Social life and customs 7 Campaigns 6 Description and travel 6 less ...