Dr. Clark gave his astronomy students an exam today and was pleased to hear that the students thought the exam was fair and covered a broad range of the lecture material from the past several weeks. This suggests that the students believed the exam had:

Which factor contributed to the rise of african empires such as ghana and mali ? a. their creation and involvement in trade networks b. they focused only on agricultural production. c. they didn’t engage in warfare with other nations d. their geographic location protected them from attacks.