John can produce 20 shoes or 200 shirts. Mike can produce 100 shoes or 200 shirts. What is John's opportunity cost for 1 shoe in terms of shirts given up?

How did the results of wwi benefit the u. s.?

The soviet union and the united states believed in two very different economic systems. what were the names of each?

Which of the following statements describes the philosophy of thomas hobbes? democracy is necessary for a country to succeed. b. a country needs a ruler with absolute power to succeed. c. people have natural rights to life, to be free and to own property. d. a country needs no rulers or government to be safe and successful.