David Ramsey and James Winthrop differ completely towards the principle of representation in the United States,<em> they only agreed in the Bill of Rights</em>.
On one side David Ramsey, who is a federalist, believes the whole country should be governed by the same laws made by the legislation. On the other side James Winthrop is an anti federalist who believed that one of the reasons freedom in America was presereved was because the states have the right to be self-governed. He thought it would be impossible for all the states to agree and be ruled by the same laws.
The answer is A. Robert Fulton, who, although he wasn't the first one to come up with the steamboat idea, Fulton built the first safe practical model of the steamboat.