At around 120,000 BP, early h.s. sapiens are already leaving Africa, with their presence documented in China and the Palestine before 100,000 BP. On arrival, they may have encountered the descendants of previous emigrants (erectus, neanderthal, archaic h.s.s., etc.), with which they may also have mated. The real exodus, however, only starts around 50,000 (or 60 or 70,000) BP, when h.s.s. rapidly spread all over the world. Claims that the Toba supereruption somehow triggered the exodus are impossible to substantiate. Claims that h.s.s. literally exterminated the other homo species are no doubt exaggerated, however, it seems unlikely that h.s.s. did not have some hand in the matter: simple competition may have been enough.  

In spreading all over the world, homo sapiens sapiens were doing nothing but what their predecessors (e.g. h. erectus) had done before them. But they spread faster and further. They were highly sophisticated hunters, with fully functional modern language, using fire on a routine basis, with domesticated dogs, long-distance trade, diversified and complex tools. The first evidence of art is dated to 40,000 BP.  

We must remember how sparsely populated the world was during major glaciation. One estimate places the entire population of Europe during the Last Glacial Maximum at some 4-6,000 people.  

This timeline also allows us a first glimpse into the Holocene Interglacial, which humanity at present inhabits. It contains at least two things, we learn here: agriculture and the state.