A.P world history

- AP World History - Stearns Chapter 1 – From Human Prehistory to the Early Civilizations I. Introduction A. Human origin – 2.5 million years ago 1. 1/4000 of earth’s existence – 24 hour day – last 5 minutes B. Human negatives and positives 1. Aggressiveness, long baby time, back problems, death fears 2. Grip, high/regular sex drive, omnivores, facial expressions, speech C. Paleolithic (Old Stone) Age – 2.5 million to 12000 BCE 1. Simple tools – increase in size, brain capacity – Homo erectus II. Late Paleolithic Developments A. Homo sapiens sapiens – 120,000 years ago – killed off others? a. Population growth required change – 1 square mile to hunt/gather for 2 people i. Long breast feeding – limit fertility