Rwanda, Burundi, Jamaica, and Trinidad and Tebogo were admitted to the United Nations.
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The United Nations formed the World Health Organization (WHO).
The UN Security Council holds its first session.
The UN released a report warning that 14% of Earth's species face a very high risk of extinction.
UNESCO recommended that Australia's Great Barrier Reef be listed as World Heritage Site 'in danger.'
The United Nations General Assembly passes its first resolution.
