Description and travel Social conditions Economic conditions 9 Social life and customs 8 History 5 Politics and government 4 Travel 4 mer ... Social history 3 Economic assistance 2 Ethnology 2 Food supply 2 Indigenous peoples 2 International relief 2 Taigas 2 Agriculture 1 Boundaries 1 Caribbean Area 1 Children 1 Civilization 1 Discovery and exploration 1 Effect of human beings on 1 Emigration and immigration 1 Funeral rites and ceremonies 1 Globalization 1 In motion pictures 1 Industrialization 1 Intellectual life 1 Iranians 1 Islam 1 Military policy 1 mindre ...