Something other than exploiting cheap foreign labor must be driving international trade

Real interest rates at times have been negative. Why would anyone lending money agree to a negative real interest rate?

What will be an ideal response?

Which of the following phrases does not describe an essential characteristic of a factory?

a. produces a standardized product to be sold in a wide market b. relies on stocks and bonds in order to finance plants and machinery c. assembles workers under a definite organizational discipline d. carries out complex operations in one building or in adjacent buildings