• Stone tools created in eastern Africa at Lomekwi in the Turkana Basin 3,3 million years ago . • Tool industry 2,3 million years ago called the Oldowan tool industry. • Acheulean tool industry 1,5 million years ago in Africa spreads to Middle East & Europe 800 000 to 600 000 years ago. • Homo Erectus uses fire 1,5 million years ago. • Bone tools & backed blades by Homo Sapien 90 000 to 60 000 years ago in southern & east Africa. • Oldest rock art at Blombos Cave, South Africa 77 000 years ago (early chemistry ). • Lebombo Bone from Swaziland is the oldest known mathematical artefact which shows 29 distinct notches depicting a month cut into bone around 35 000 BC. • Iron, bronze & brass used in west Africa by 1200 BC. • Swahili traders were major suppliers of gold to Asia in the Red Sea & Indian Ocean trade routes (recorded by north African explorer Abu Muhammad ibn Battuta ). • Steel forging by Haya in Tanzania by 1 BC. • European travelers in th...
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