The document outlines the timeline of world history from prehistory to modern times. It divides world history into two periods: prehistory, before writing was invented; and history, after writing allowed events to be recorded. Prehistory is further divided into the Stone Age, Bronze Age, and Iron Age. The Stone Age includes the Paleolithic Age (Old Stone Age), Mesolithic Age, and Neolithic Age (New Stone Age). The Paleolithic Age saw early humans' absolute dependence on nature and use of stone tools. Agriculture and animal domestication began in the Neolithic Age.