What is the fundamental problem producers and consumers face

Describe some effects of the rise of communism in the soviet union?

Atraffic cop has pulled over a speeder, only to discover that he has stopped a close friend. the police officer is torn, because his professional obligations demand that he punish the speeder, but his personal obligations suggest that he should give a friend a break. what is this called?

One result of recent migration trends is that the workforce in europe has become