This document contains information from Avemaria College in the Philippines. It discusses the key differences between history and prehistory. Prehistory refers to the time before written records, while history relies on written sources. The document also outlines the three age system used to characterize prehistory - the Stone Age, Bronze Age, and Iron Age based on the tool materials. Additionally, it discusses history as a social science and its relationship to other disciplines like anthropology. The document provides information on sources of historical data and the historical method of source criticism.