International Civil Aviation Organization (ICAO) | Britannica
https://www.britannica.com/topic/International-Civil-Aviation-Organization
WebSep 14, 2023 · International Civil Aviation Organization (ICAO), intergovernmental specialized agency associated with the United Nations (UN). Established in 1947 by the Convention on International Civil Aviation (1944), which had been signed by 52 states three years earlier in Chicago, the ICAO is dedicated to developing safe and efficient …
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