C. that's the process of introduction
it doesn't mention any debate or set rules regarding it, the bill isn't passed until it goes to a vote, and a filibuster is a really long speech to delay progress so the rest of the choices are ruled out
The answer is D because answers A, B, and C are simply spreading American culture throughout America, thats not cultural diffusion by any means.
This is the best I got: The best way to prove that slavery was in fact an inefficient market because the assumptions of Fogel and Engerman are weakly based and in some cases rather short-sighted.
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