Write a short paragraph that explains the central idea of the article. Use at least two details from the article to support your response.

Rank the following from most to least devasting: ordovician, permaian, cretaceous, pleistocene

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.

Federal courts have jurisdiction when a case involves what?