If I understand the question right, it would be showing bias in favor of the military, because of his location and the fact that he's talking about being supportive about the military.
In 1863, General Edmund Kirby Smith took command of the Confederate Trans-Mississippi Department, and unsuccessfully tried to relieve the siege of Vicksburg by Lt. Gen. Ulysses S. Grant on the opposite eastern banks of the Mississippi River in the state of Mississippi.
The correct answer is<em> C. The uncovering and careful reading of primary sources.
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This element is fundamental to understanding a point in time because a primary source provides direct evidence about a historic event, person, place or situation. This original information allows other investigations as a point of reference.
Primary sources can be diaries, interviews, fieldwork, pictures, books, ancient texts, government documents., and historic records.