Economic conditions Economic history 16 History 16 Social conditions 13 Politics and government 8 Race relations 5 City planning 4 more ... Economic aspects 4 Emigration and immigration 3 Ethnic relations 3 History, Military 3 Mexicans 3 Social life and customs 3 Structural adjustment (Economic policy) 3 African American farmers 2 African Americans 2 Agricultural colonies 2 Brick trade 2 Businessmen 2 Cities and towns 2 City and town life 2 Civil rights movements 2 Coal miners 2 Coal trade 2 Commerce 2 Crime 2 Economic assistance, Domestic 2 Economic forecasting 2 Education 2 Environmental aspects 2 less ...