Single-step vs multi-step tools vs complex tools 1) The great leap forward in to

Single-step vs multi-step tools vs complex tools
1) The great leap forward in tool making was only 80k years ago in East Africa (probably due to fishing).
2) The full modern human toolkit emerged only in the upper Paleolithic around 50K years ago.

https://naturallawinstitute.com/docs/the-conflict/the-conflict-series-from-the-evolution-of-man-to-the-european-vs-semitic-conflict-of-civilizations/conflict-3-the-evolution-of-man/