Subsistence Economy:An economy focused on producing only enough goods and services to meet the basic needs of the population, with little to no surplus for trade or exchange.
Market Economy:An economic system where the production and distribution of goods and services are determined mainly by competition in markets rather than by central planning or command.
Feudalism: A social and economic system based on the relationship between lords and serfs, where the lord provided protection and land in exchange for the labor and loyalty of the serf.