Assume two countries H and F Each country produces two goods A and B Good A is relatively capital intensive and country F is relatively labor abundant Consider H and F to be large economies1 Suppose t

1. When the amount of labor in country F increases, the production possibilities frontier (PPF) of country F will shift outward. This is because an increase in labor allows for more production of goods A and B. The production point of country F will also move to a higher level of production, as it can produce more of both goods A and B.

2. i. With an increase in labor in country F, the world relative supply for good B will increase. This is because country F, being relatively labor abundant, can now produce more of good B at a lower cost. As a result, the world relative price of good B will decrease.

ii. An increase in labor in country F will improve the terms of trade of country F. The decrease in the world relative price of good B will benefit country F, as it can now export more of good B at a higher price relative to the import price of good A.

iii. The terms of trade of country H will worsen. With the increase in labor in country F, country H will face greater competition in the production of good B. This will lower the export price of good B for country H, while the import price of good A remains unchanged. Therefore, the terms of trade of country H will deteriorate.

iv. The welfare of country F will improve. With the increase in labor, country F can produce more of both goods A and B. This will increase its domestic output and consumption, leading to higher welfare.

v. The welfare of country H will worsen. The deterioration in the terms of trade for country H means that it will receive a lower price for its exports (good B) while paying the same price for its imports (good A). This reduces the purchasing power of country H and lowers its welfare.

3. i. When the amount of capital in country F increases, the world relative supply for good B will decrease. This is because country F, being relatively capital intensive, will shift its production towards the more capital-intensive good A. As a result, the world relative price of good B will increase.

ii. An increase in capital in country F will worsen the terms of trade of country F. The increase in the world relative price of good B will make it more expensive for country F to import good B, while the export price of good A remains unchanged. This reduces the purchasing power of country F and lowers its terms of trade.

iii. The terms of trade of country H will improve. With the decrease in the world relative supply for good B, country H will face less competition in the production of good B. This will increase the export price of good B for country H, while the import price of good A remains unchanged. Therefore, the terms of trade of country H will improve.

iv. The welfare of country F will worsen. With the increase in capital, country F will produce less of both goods A and B. This will decrease its domestic output and consumption, leading to lower welfare.

v. The welfare of country H will improve. The improvement in the terms of trade for country H means that it will receive a higher price for its exports (good B) while paying the same price for its imports (good A). This increases the purchasing power of country H and raises its welfare.

4. i. As a small country, an increase in labor in country F will not have a significant impact on the terms of trade of country F. The terms of trade for a small country are largely determined by external factors, such as world prices and demand.

ii. The increase in labor in country F will not have a significant impact on the terms of trade of country H. As a small country, country H's terms of trade are also largely determined by external factors.

iii. The welfare of country F may improve slightly due to the increase in labor, but the impact will be limited as a small country has less influence on the overall economy.

iv. The welfare of country H may slightly worsen due to increased competition in the production of good B, but the impact will be limited as a small country has less influence on the overall economy