What is the purpose of the United Nations? Select three choices.Maintain world peacePromote social progressPromote social justiceAct as a free trade zoneReduce greenhouse gasesSet rules for trade between nations

The United Nations works to maintain international peace and security and to encourage social progress. It also supports human rights and fairness among people and nations, which matches promoting social justice. It is not a free trade zone and does not set trade rules between nations.

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