Europe

Tally marks

Human invent tally marks, their first numeral systems

Around 43,000 years ago, early humans carved the first tally marks into bone, inventing the earliest known numeral systems. This brilliant shift toward abstract mathematics allowed our ancestors to track lunar cycles and inventory resources. It laid the vital groundwork for modern mathematics, commerce, and advanced human societal planning.

Island off the shore of the Azores

The Azores are discovered, possibly by Vikings

Although it was traditionally believed that Portuguese explorers were the first humans to arrive on the Azores – an archipelago composed of nine volcanic islands in the Macaronesia region of the North Atlantic Ocean – there is evidence to suggest otherwise. Researchers have discovered that 5-beta-stigmasterol is present in sediment samples from between 700 and 850 C.E. This compound is found in the feces of livestock, such as sheep and cattle, neither of which are native to the islands. Additionally, mice on the Azores were discovered to have mitochondrial DNA suggesting they first arrived from Northern Europe, suggesting that they were brought to the islands by Norwegian Vikings.