What happened to the US economy in the
1970s, after 25 years
of broad economic
expansion?

The 1970s saw some of the highest rates of inflation in the United States in recent history, with interest rates rising in turn to nearly 20%. Central bank policy, the abandonment of the gold window, Keynesian economic policy, and market psychology all contributed to this decade of high inflation.

c-three

explanation:

legislative, executive and judicial

b: the establishment clause  

b: socialism