As stated in the constitution slave trade in America ended in what year

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)

Wegeners theory of continental drift states that the continents have changed throughout history while the theory of plate tectonics

People make choices about how to use resources.