Final answer:
The command system, where economic decisions are centrally made, is known as a command economy, communist economy, or planned economy, distinct from a market economy where decisions are decentralized.
Step-by-step explanation:
The command system, where one or several people make all the economic decisions, is also known as a command economy, communist economy, or planned economy. In this system, all major economic decisions are made by the government or central authorities, contrasting with a market economy where decisions are decentralized and made by individual consumers and firms. Command economies are associated with collective or government ownership of resources and production means, and historic examples include the economies of Ancient Egypt, Medieval manor life, and the 20th-century communist countries like the Soviet Union and China before market reforms.