The Guanche, native inhabitants of the Canary Islands, deployed both slings and cast stones (incl. boulders) against the Spanish very efficiently. It is a rath

The Guanche, native inhabitants of the Canary Islands, deployed both slings and cast stones (incl. boulders) against the Spanish very efficiently. It is a rather unknown fact, but the worst colonial defeat of the Spanish ever didn't happen in the Americas, but on the island of Tenerife, where a Guanche chief called Bencomo trapped the Spanish at Acentejo and killed several thousands of them. It is doubly remarkable, because the Guanche at that time were really living in their Stone Age. Their civilization was nowhere near as developed as the Aztec Empire.