Your answers are correct. A&C.
Expanded trade, regional empires, and increased global trade are all effects of which of "<span>b. the transition from river valley civilizations to classical civilization," since classical civilizations engaged in more far-reaching trade and cultural diffusion. </span>
Answer: Due to the poor sanitation of the internment camps, deadly diseases such as whooping cough, measles and dysentery spread among the Cherokee.
Explanation:
<span>B. Encouraging massive migration of Mexicans across the border </span>
The answer is Marie Curie