So the broad picture we see is that between 9500 bce and 6500 bce – that is, a 3000-year period immediately following the end of the Younger Dryas and the beginning of Holocene – both plant and animal domestication had spread across most of the Fertile Crescent, after progressing in fits and starts during the last glacial period, with different regions contributing in different ways at different times and probably with multiple instances of domestication for the same species.