I'd go for letter D) . But your teacher probably wants to hear letter A) or at least C)
Answer:
primary is from the person themself. secondary is somebody else writing about an event or person they are not or were not in.
<span>Once there was a food surplus, complexity within early river civilizations increased, as did t</span>rade and commerce, according to the archaeological record.
Answer:
The empire began to split due to wars over succession, as the grandchildren of Genghis Khan disputed whether the royal line should follow from his son and initial heir Ögedei or from one of his other sons, such as Tolui, Chagatai, or Jochi.
Common languages: Middle Mongol; Turkic la...
Explanation:
