Which of the following statements is not correct? a. every nation-state has a national government.. b. national governments have a great deal of power. c. almost all land on earth has been divided into nation-states.. d. national governments were one of the first forms of government ever invented.. e. all of these statements are correct

Shari is trying to decide how she should use her cash birthday gifts. her choices are new clothes, a concert ticket, or donating the money to her favorite charity. shari decides to donate the money. the value given up by not choosing both the clothes and the concert ticket is called a . a.) trade-off b.) opportunity cost c.) retail price