Thomas Jefferson questioned his right to buy the Louisiana Territory as the United States Constitution did not directly address the acquisition of land by the President.
The Federalists were clamoring that the Louisiana Purchase was unconstitutional but the Democratic Republicans believed it was permissible as it was merely a treaty.
The connection between steel and the railroad system is the railroad system couldn't exist without steel. That's why things like the Bessemer process where invented because steel needed to be produced fast.
