Answer:
Gravitation is BOMB. Yuri on Ice is pretty good too
Explanation:
The Khmer Rouge made quite a few changes during their reign. They outlawed money, books, and religion. They also killed anyone believed to be of the "old society" which included intellectuals, merchants, and former government officials and former soldiers. They killed millions.
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.
