This document discusses what history is and why it is important to study. It defines history as a branch of knowledge that records and explains past events. Key reasons to study history include: to understand the roots of our current culture, learn from past mistakes, examine trends that repeat throughout history, learn historical facts, and understand how different factors shape society. The document outlines that historians investigate the past through a variety of primary sources like artifacts, documents, memoirs, and oral histories to piece together clues and fill in gaps to understand historical events. Secondary sources like textbooks and encyclopedias then interpret and analyze these primary sources.