Q1 (15 points) Are the following economic changes related to trade and factor movements a Pareto improvement? Why or why not? (Be concise and specific in your explanation for full credits.) 1) (3 points) Moving from autarky to free trade in the Ricardian model. 2) (3 points) Moving from autarky to free trade in the Specific- Factors model. 3) (3 points) Moving from autarky to free trade in the Heckscher-Ohlin model. 4) (3 points) Inward immigration (immigration inflow) in the Specific-Factors model. 5) (3 points) Inward capital inflow (FDI inflow) in the Heckscher-Ohlin model