Economic conditions History 25 Social conditions 13 Politics and government 7 Economic policy 6 Commerce 5 Economic aspects 5 Mais ... Economic development 5 Regional planning 4 Finance, Public 3 Indians of South America 3 Land tenure 3 Monetary policy 3 Technological innovations 3 Urbanization 3 Banks and banking 2 Economics 2 Government policy 2 Government relations 2 Harbors 2 Insurgency 2 Peasants 2 Population 2 Railroads 2 Rural conditions 2 Social aspects 2 Social life and customs 2 Social mobility 2 Sustainable development 2 Agriculture 1 menos ...