Does a rise in the price level bring a movement along the aggregate supply curve or does it shift the aggregate supply curve?

Because of the quantity and quality of its resources, the U.S. has an absolute advantage in the production of many goods and services. Does this imply that the U.S

cannot benefit from trading with a developing country that has less productive ability? Why or why not?

If relative PPP held, then the real exchange rate must be equal to one

Indicate whether the statement is true or false