1874
Foundation of the Universal Postal Union
The Universal Postal Union is founded in Bern with strong Swiss participation. A Universal Postal Convention is negotiated soon after. International postal traffic is transported by rail and ship. After the Second World War, the aeroplane becomes an important means of transport.
![Logo of the Universal Postal Union, circa 1956. Source: PTT Archive](https://www2.post.ch/-/media/portal-opp/k/bilder/postgeschichte/1874-weltpostverein-1872x1053.jpg?mw=1600&vs=1&hash=AA80D88B8F295295631C6F46B892298B)