Universal Postal Union

The Universal Postal Union (UPU) was established by the Berne Treaty of 1874 and became a specialised agency of the UN in 1948. Article 1 of the Vienna Constitution 1964 states that the aim of the Union is to secure the organisation and improvements of postal services, promote the development of international collaboration and undertake, as far as possible, technical assistance in postal matters requested by members countries. To this end, the countries that have adopted the Constitution comprise a single postal territory.