Patents do not A. assign property rights to inventors. B. protect the rights of inventors for their lifetimes. C. provide firms an incentive to research. D. internalize externalities.

Which of the following was not a characteristic of phoenician cities? a. they were located on islands. b. they had harbors on each side. c. they were built on land jutting out to the sea. d. they were surrounded by high stone walls and towers.