What problem has the speaker always had with the "several schemes of other projectors" who try to come up with a solution? (i. e., in what way have previous "fixes" been inaccurate, according to the speaker? ) how is swift using both mock ethos and logos?

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.