Many countries are much more peaceful and less threatening than the U.S is
On $5 bills Abraham Lincoln is on one side and the Lincoln memorial is on the other side.
The PPC (or PPF, same thing) shows economic growth because it outlines exactly what the economy can produce at that moment. When it shifts outward in any way (be it towards consumer and capital goods, or X and Y), that MUST be because of economic growth.
C.1 because it is the only responsible answer
