APHUG SEMESTER 1 STUDY GUIDE UNIT 1 Hecataeus?s 5th century BCE map of the world?he describes the countries and inhabitants of the known world, and included a map to illustrate where they lived; was based on Anaximander?s earlier map of the earth, which he corrected and enlarged Physical geography?focuses on the natural environment; might study mountains, glaciers, coastlines, climates, soils, plants, and animals