When a company controls an entire industry or a specific area of the economy it has a monopoly. Democratic governments tend to break up monopolies as they can be unhealthy for their economies. Monopolies can stifle innovation and competition.
Reserved powers are the powers that are not explicitly stated in a governing document but are implied powers because of other powers which are granted to the government. The creation of an education system or state identification systems are examples of reserved powers.
Answer: Command economy and capitalism have the least in common from the choices provided.
