1st part of B is in my other posted question but i also need help with 4A

Date: B. Describe a fiscal policy that would help increase the value of the dollar and why it would have this effect. What effects does this policy have on unemployment and the merchandise trade balance? (5 points) 4. Purchasing power parity and the law of one price are two related concepts. A. Explain what is meant by the law of one price. Also explain why a person or nation could profit if this law does not hold. (3 points)