= Postal Union
{wiki=Postal_Union}
A Postal Union typically refers to an international agreement or organization that facilitates the exchange of mail between countries. The most prominent example is the Universal Postal Union (UPU), which is a specialized agency of the United Nations established in 1874. The UPU aims to promote and coordinate international postal services among its member countries, ensuring that mail can be sent and received across borders efficiently and reliably.
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