the american economy is called a mixed system because
Mixed economy Economies ranging from the United States[5][6] to Cuba[7] have been catalogued as mixed economies. The term is also used to describe the economies of countries which are referred to as welfare states, such as the Nordic countries.[8][9] Governments in mixed economies often provide environmental protection, maintenance of employment standards, a standardized welfare system, and maintenance of competition.
Market economy A market economy is an economic system in which the decisions regarding investment, production, and distribution are guided by the price signals created by the forces of supply and demand. The major characteristic of a market economy is the existence of factor markets that play a dominant role in the allocation of capital and the factors of production.[1][2]