History Economic conditions 17 Social conditions 17 Politics and government 8 Railroads 8 Peasants 6 Political violence 6 更多 ... Commerce 5 Social aspects 5 Urbanization 5 Business enterprises 4 Economic aspects 4 Economic policy 4 Land tenure 4 Social life and customs 4 Violence 4 Women 4 Children 3 Cities and towns 3 Coffee industry 3 Commercial policy 3 Government policy 3 Transportation 3 Agriculture and state 2 Banks and banking 2 Cattle trade 2 City planning 2 Early childhood education 2 Economics 2 Families 2 少 ...