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Desertification
An expansion of dry conditions to moist areas that are next to deserts.
Glossary
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Developed countries
The developed countries (DCs) are the top group in the hierarchy of developed countries (DCs), former USSR/Eastern Europe (former USSR/EE), and less developed countries (LDCs).
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Development
A process of improvement in people’s material conditions often linked to the diffusion of knowledge and technology.
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Devolution
The process by which a sovereign country releases or loses more political and economic control to its constituent elements, such as states and provinces.