When pearl was in high school, she constantly worried about her relationships and her school achievements. now that she is older, she worries about her health and the environment. this change in the focus of her worrying is due to?

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.