Which of the following best explains a development in the trans-Saharan trade networks in the period 1200-1450 ?

A The networks became more dangerous because of religious conflict between Christian and Muslim states. B The geographic range of the networks increased because of improved commercial practices. C The networks were increasingly disrupted because of the growing importance of maritime commerce. D The value of merchandise along the networks increased because of demand for …

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Which of the following was a significant effect of the Polynesian migrations in the Pacific in the period from 600 C.E. to 1450 C.E.?

A The creation of an extensive trade network connecting Pacific islands to the Asian mainland B The transfer of domesticated plant and animal species to new islands in the Pacific C The development of distinctive Polynesian maritime technologies was quickly adopted by Chinese and European explorers D The establishment of an ethnically unified Polynesian state …

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