Basic General Knowledge
The regional economic commissions of the Economic and Social Council (UNO) are

ECWA (Economic Commission for Western Asia) and ECLA
All of these
ECLA (Economic Commission for Latin America) and ECA (Economic Commission for Africa)
ECE (Economic Commission of Europe) and ESCAP (Economic and Social Commission for Asia)

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Basic General Knowledge
Free market is

market where the price of a commodity is determined by free play of the forces of supply and demand
None of these
ports that are exempted from payment of customs duty on articles of commerce, primarily to encourage tourism
a condition in the international market where nations do not impose customs duty or other taxes on import of goods

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