Stone to Silicon

Communication · 1840

Uniform Penny Post

One cheap prepaid stamp sends a letter anywhere in Britain.

Rowland Hill's reform, launched with the Penny Black stamp in May 1840, replaced distance-based fees paid by recipients with a flat prepaid penny. British letters more than doubled within two years, and nearly every country adopted stamps; the Universal Postal Union followed in 1874.

See it in the living treeWikipedia

Arcs above join it to what it stood on, arcs below to what it led to. The bar places this stretch on the tree's whole timeline.

What it built on 2

Related measurements

The dashed line marks when it first worked.

Letters and parcels handled in the UK Latest: 16.7B items per year (1993) Source: Our World in Data

Literacy rate, England/UK since 1475 Latest: 98.5 % (1950) Source: Our World in Data