Primary Source: A primary source is an original document or artifact from the time period being studied. It can be firsthand accounts, diaries, letters, photographs, or other records created by people who experienced or witnessed the historical event.
Secondary Source: A secondary source is created after an event has occurred and often provides interpretations or analysis based on primary sources. Examples include textbooks, scholarly articles, documentaries, and history books.
Cause and Effect: In studying historical events, understanding cause and effect relationships helps identify why certain events happen as they do and how they lead to subsequent developments.