Explain how national boundaries can impede cultural interaction and economic exchange.

Read the article titled "trans-saharan migration routes to north africa and the eu: historical roots and current trends." why do tens of thousands of sub-saharan africans try to cross the mediterranean each year? how are these refugees commonly portrayed? (site 1)

Which barrier to economic development is shown in the following examples?

Which of the following statements best describes east asia? a. east asia is known to be the crafle of civilizationb. east asia is one of the world's most populates placesc. east asia is one of the worlds riches placesd. east asia is located near the equator me asap huhu