How did the Columbian exchange affect the african people

"So many Africans were forced into slavery and sold to the Europeans. Then they were forced to migrate to the Americas where they worked in plantations for the rest of their lives. ... The Columbian Exchange changed the culture of many African people to an Agricultural economy based on the cultivation of maize."  

By the way I got this off the internet and copy  and pasted it so don't write it just look and write in your own words please. Please do not copy and paste or write what i wrote because this is someone else's explanation. Please please do not copy and write it in your own words.

Explanation:

a historian who compares the expansion of political systems to the expansion of economic systems to the expansion of economic systems is organizing history by theme.

hope this : d

what are the issues?