If the political conservatism of students who join fraternities and sororities is greater than that of students who do not, the gap in the political attitudes of the two groups will probably widen as they progress through college. This would be best explained in terms of

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.