In the real world, it costs money to move products from one country to another, but Ricardo's model does not address these ______ costs

Suppose a farmer in Nebraska incurs $8,700 in crop damage from sparks that are created when a local railroad company sends trains along tracks bordering the farm. This damage can be best described as a:

a. negative externality. b. positive externality. c. transaction cost. d. social benefit.

In terms of cash flows, a "balloon" mortgage resembles

A) an amortized loan. B) a Treasury bill. C) a conventional bond. D) a zero-coupon bond.