Universal_Postal_Union

A [[Multinational]] government organization that coordinates postal policies between member nations.  Each member country
agrees to the same set of terms for conducting international postal duties.

[[UPU]] is the common abbreviation for Universal Postal Union.

Prior to the UPU, a country would have to have a separate postal treaty for each country that it wished to carry international mail to/from.

The UPU is the oldest multinational body and was created in 187?