What is the most important concept to underdtand in a primary source document

Primary source documents are the building blocks of history, and studying them allows students to draw their own conclusions about history, connect to a person or an event, and tell a story in their own way.

Explanation:

Primary sources help students develop knowledge, skills, and analytical abilities. When dealing directly with primary sources, students engage in asking questions, thinking critically, making intelligent inferences, and developing reasoned explanations and interpretations of events and issues in the past and present.

Examples of a primary source are: Original documents such as diaries, speeches, manuscripts, letters, interviews, records, eyewitness accounts, autobiographies. Empirical scholarly works such as research articles, clinical reports, case studies, dissertations.

 B

Explanation: Japan's Imperialism played a key role in World War 2, and since the imperialism would lead to why Japan attacked Pearl Harbor, and would later create a rivalry between the "Great Powers": the U.S and Japan