Answer:
There would be too much innocents dead, and they feared setting an imperialistic or authoritarian viewpoint for other countries will cause the other countries to unite against them.
Explanation:
On June 29, 1947, as the first president to address the National Association for the Advancement of Colored People (NAACP), Harry Truman pledges his support for upholding the civil rights of all Americans.
The economy is the best answer because its the biggest factor worldwide.
Id say your best bet is A because Washington established the cabinet which aids presidents in running the country. It cannot be B, C or D because congressional oversight was already established by the constitution, there were only a couple departments, and the constitution already defined its purpose.