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The Universal Postal Union, then known as the General Postal Union, was established with the signing of the Treaty of Bern to unify disparate postal services and regulations so that international mail could be exchanged easily.
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Universal Postal Union
Specialised agency of the United Nations
The Universal Postal Union is a specialized agency of the United Nations (UN) that coordinates postal policies among member nations and facilitates a uniform worldwide postal system. It has 192 member states and is headquartered in Bern, Switzerland.Source: Wikipedia (CC BY-SA)
Treaty of Bern
1874 treaty establishing the Universal Postal Union
The Treaty of Bern, signed on 9 October 1874, established the General Postal Union, which is today known as the Universal Postal Union. Named for the Swiss city of Bern, where it was signed, the treaty was the result of an international conference convened by the Swiss…Source: Wikipedia (CC BY-SA)