If firms in a competitive market are not identical, then the long-run market supply curve will be

Which of the following is a valid shortcoming of the use of foreign aid to eradicate poverty?

A) It may not lead to a sizeable increase in physical capital in poorer countries. B) It is difficult to transfer aid to poor countries. C) It can lead to polarization of the world economy. D) It mostly leads to the transfer of resources among rich countries.

State and local governments finance expenditures mainly from

A) tax revenue. B) government bonds issued at the state level. C) funds provided by the federal government. D) private bank loans. E) lottery funds.