Answer:
I believe policies, but don't take my word for it
The ratification of the US constitution set many ground rules for what the government could and could not do. It also outlined what the government was, and what its main goals and purposes were. This showed the true ideas and beliefs of a country that gained independence a little over a decade prior to the ratification of the document.
I would go with C.
Hope that this helps you..
Frederick Douglas - the amendments
Andrew Carnegie - industrialization
Samuel Brennan - gold rush of 1849