Agriculture Economic aspects 24 Economic conditions 9 Food supply 7 Agricultural innovations 5 Agriculture and state 5 Food security 5 more ... History 5 Agricultural industries 4 Economic development 4 Traditional farming 4 Antiquities 3 Colonies 3 Food industry and trade 3 Foreign economic relations 3 Land settlement 3 Origin 3 Plants, Cultivated 3 Rural conditions 3 Social conditions 3 Social life and customs 3 Agricultural productivity 2 Agriculture, Prehistoric 2 Description and travel 2 Economic policy 2 Food consumption 2 Vegetables 2 Administration 1 Agricultural development projects 1 Agricultural subsidies 1 less ...