A command economy is a system in which the government determines production, investment, prices, and incomes. The government is responsible for allocating all resources and makes allocation decisions.
A traditional economy is a system that relies on customs and history. They often depend on agriculture, fishing, hunting, gathering, etc. They are often in Africa, Asia, Latin America, and the Middle East.
A market economy where the laws of supply and demand direct the production of goods and services. This system has limited government involvement and is competition.
A mixed economy is an economic system combining private and public enterprise. This system consists of private and government owned entities. A mixed economy monitors the power of monopolies. An example of a mixed economy is the United States.