Trade agreements made prior to WWII and prior to the establishment of GATT and its new guidelines, were based on which principle?

Which of the following will not cause the labor demand curve to shift to the right?

A) a technological improvement that increases labor productivity B) an increase in human capital in the labor force C) an increase in the market wage rate D) an increase in the price of the firm's product

If the federal government where to raise the income tax rates, would this have any impact on a state's cost of borrowing funds? Explain

What will be an ideal response?