Why even English-speaking countries like the US, use Par Avion a French word for Air-mail?
Almost every country in the World is a member of the Universal Postal Union (UPU), which governs and sets the terms for mailing between countries. The official language of the UPU is French and the term ‘Par Avion’ which dates back to before World War II, is the chosen designation for air mail. Established in 1874, the UPU has its Headquarters, well, not in France but in the Switzerland capital Bern.
