Answer: D.
Explanation: At the time the national gov was quite weak and the individual states were basically their own governments. They ruled themselves and the national government could not force the states to do anything because the states held more power than Congress did.
The Reorganization Act allowed to president to hire confidential staff as he saw it fit, while also he was given the power to reorganize the executive branch of the government.
One of the main ways in which travel routes today differ from the trade routes of classical era civilizations is that they're far safer, since people have to worry much less about being robbed and/or injured--this is due mostly to government oversight and policing of the routes in question.<span />