Describe three common problems that have often been faced by command economies. What kinds of issues have encouraged many countries to switch to mixed or market systems?

Common problems in a command economy include lack of the profit incentive, lack of competition and inefficiency. The profit motive lacks in a command economy hence there is no innovation. There is also inefficiency as the government determines what is produced as opposed to the market. May countries have switched to a mixed or market systems because the laws of demand and supply dictate what is produced leading to efficiency