Prehistory
Prehistory is the span of human history before the invention or adoption of writing. It covers the long arc from the appearance of the first hominins and later human species to the emergence of writing in various regions, which marks the transition to recorded history. The exact chronology varies by region.
Because writing appeared at different times around the world, the boundaries of prehistory are regionally defined.
Evidence for prehistory comes from archaeology, paleoanthropology, and related sciences. The most durable records are artifacts,
Key developments include the manufacture and refinement of stone tools (Oldowan, Acheulean, Mousterian; later blades and
This article uses regional variation and cross-cultural timelines; prehistory is defined by absence of writing rather