Microeconomics discussion 2

Since all economies are faced with scarcity, how might nations attempt to minimize the human hardship associated with scarcity? Try to use concepts seen in this unit such as production possibilities frontier, comparative advantage, circular flow, etc. in your answer

Must be around 150 or more words.  Microeconomics, 3rd Edition in this book please. This does not need a title page but will need  referances.