Crystal is friendly, compassionate, and sincere nearly all of the time, but if she is in an unfamiliar situation with no one she knows, she can be cold and unfriendly. This less consistent trait is considered a personality trait

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.