How does the text explore ways in which America has changed since the abolition of slavery? How did the accomplishments of the Harlem Renaissance allow future change to take place?

you can't, but you can edit them

- "made the south's economy grow rapidly and a small effect that a lot of people don't know is that it made the more demand of slaves and cotton products. and also new states formed due to plantations growing in size."

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porter is writing economic history because he is focusing on the cost of developing vaccines.

where is the subject? hahahaha