PowerPoint Presentation on the Millet

Tomorrow I am giving a presentation in my Archaeology: Rise and Fall of Civilizations class on the Millet.  I honestly had no idea what a millet even was, at first I thought it was someone's last name, but its actually a type of grain.  It was domesticated before rice in Northern and Central China and there are four widely cultivated millet species used today: 1) Pearl Millet 2) Foxtail Millet (one of the earliest crops in the early Neolithic China) 3) Proso Millet - Common Millet (also one of the earliest crops in the early Neolithic China) and 4) the Finger Millet.  The Millet was first seen around the late Pleistocene and early postglacial when the climate changed from cold to dry to warm to moist conditions.  There were 3 main places where millet was found in excavations: Dadiwan, Peiligang and Chishan which were all located close to the Yellow River.  Soon hunter-gatherer communities begin to harvest and propagate millet in the northern regions of China.