It could be considered as a key to the USA'S success. Back then we needed immigrants in order to build our nation. We were once immigrants to. So without the whole idea of immigration, the U.S might not have turned out as well as it did.
Answer:
Among the most lucrative goods transmitted in the Columbian Exchange were sugar, corn, and tea. Columbus himself is credited with bringing sugar to Hispaniola, setting up sugar cane plantations after Spanish miners had exhausted the gold stores there....
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Africa is in the Southern Hemisphere and the Eastern Hamisphere