1719: NATO Phonetic Alphabet Aug 29, 2019
There is an alphabet for speaking letters (listed below) that goes by many names including 'International Radiotelephony Spelling Alphabet', and 'NATO Phonetic Alphabet'. This started with the advent of phones, as many letters sound similar, such as P and B or M and N when said individually, but each country had its own set, mostly standardized by the military. However, as long-distance travel became more accessible, people from different linguistic backgrounds often had trouble understanding, so in 1947 the International Air Transport Association made a list suitable for speakers of English, French, Portuguese, and Spanish, even if it mostly draws from English.
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Full alphabet as follows:
Alfa, Bravo, Charlie, Delta, Echo, Foxtrot, Golf, Hotel, India, Juliett, Kilo, Lima, Mike, November, Oscar, Papa, Quebec, Romeo, Sierra, Tango, Uniform, Victor, Whiskey, X-ray, Yankee, Zulu.