C. He developed a plan for the Erie Canal :)
the ninth amendment of the constitution
The answer is slavery. The Republicans were anti-slavery, while the democratic south was pro slavery. Eventually that, and a couple of other things, led to the Civil War.
Sorry if this was a bit late, Brainly had just recommended this question for me to answer, but I hope this helps!
<span>B.his centralization of the first unified empire in India </span>
In the United States and in other western democracies, the "Unwritten Constitution" includes the practice of "issuing currency," since this is not explicitly mentioned in the Constitution.