Answer:
It is because of his influence and assistance in its drafting, along with its "signing".
Explanation:
James Madison played a large part in the draft of the Constitution, and was present to sign it as well. This is why.
A political challenge that the United States faced after the Civil War was the issue of citizenship and rights for the freed slaves.
It would be the Democratic Party that's most associated with liberalism today, although this hasn't historically always been the case, and there are of course exceptions.
