The nation of hillyland is initially self-sufficient in coffee and rice, and so is flatland. coffee grows best on hilly land, while rice grows best on flat land. suppose each nation decides to specialize in the most suitable crop, and trade with the other nation for the other product. discuss the trade-offs: who wins, who loses, and how long do the losses persist?

Adog whistle manufacturer's factory was located near a residential area. the manufacturer used the most effective methods for testing its whistles, but it was impossible to completely soundproof the testing area. a breeder of champion show dogs bought some property near the factory and raised and trained her dogs there. although the whistles were too high-pitched to be perceived by human ears, they could be heard by the breeder's dogs. consequently, the dogs often were in a constant state of agitation. in a suit by the breeder against the manufacturer, what is the likely outcome? response - correct a the breeder will prevail on a trespass theory, because the sound waves are entering onto the breeder's property. b the breeder will prevail on a nuisance theory, because the sound of the whistles is a substantial interference with the breeder's use of her land. c the breeder will not prevail, because the sound of the whistles is not a substantial interference with the breeder's use of her land. d the breeder will not prevail, because the manufacturer has acted reasonably in testing its whistles.