What is called the "Immigration Continent" is (　) A. AmericaB. AfricaC. AsiaD. Europe

Most of the original inhabitants of America are Indians. When the European colonists came to the "New World" of America, they first massacred the local indigenous residents, drastically reducing their numbers. After that, they trafficked a large number of black people from Africa as labor force. Immigrants from Europe and other continents gradually became the majority of the North American population, so America is called the "Immigrant Continent".

So choose: A.