President Woodrow Wilson felt the most important & significant of his Fourteen Points statement was the creation of the League of Nations.
Answer
powers held by the states alone
Explanation
The tenth Amendment declares that the powers not delegated to the United States by the Constitution, nor prohibited by it to the states, are reserved to the states respectively, or to the people. That is the states have all powers not granted to the federal government by the Constitution. The tenth Amendment of the United States Constitution is the section of the Bill of Rights that basically says that any power that is not given to the federal government is given to the people or the states.
To travel from coast to coast it would take 10 days.