Prehistoric Humans to Ancient Civilizations AND Ancient River Valley Civilizations Units Bundled (Save! with two units in one) covers the prehistoric ages, cave paintings at Lascaux, the Paleolithic and Neolithic periods to the four earliest river valley civilizations of the world.   #DistanceLearning #GoogleClassroom #WorldHistoryLessonPlans #LessonPlans #HistoryLessonPlans