n.
UPU, international specialized agency of the United Nations formed in Switzerland in 1875 that administers and governs international postal service (formerly was called "General Postal Union")
The Universal Postal Union (UPU, French: Union postale universelle) is an international organization that coordinates postal policies between member nations, and hence the world-wide postal system. Each member country agrees to the same set of terms for conducting international postal duties. Universal Postal Union's headquarters are located in Berne.
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