PLS HELP!! Maximillian is preparing for an end-of-course exam in his social studies class. How can he apply Craik and Lockhart's levels-of-processing model to increase retention? Be sure to include key terms related to the model in your response.

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.