Stone to Silicon

Materials · c. 850 CE

Gunpowder

Saltpeter, sulfur and charcoal: the first chemical explosive.

Chinese alchemists described the mixture around 850 CE. It led to fire lances, cannon and firearms, and later to mining and blasting.

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

What it led to 1