"Knowledge is power" applies to civics, because it allows people to recognize the important guidelines for harmonious life in society and also learn about ways to stop negative factors, corrupt and dishonest acts that can negatively modify the elements that keep society good , balanced and harmonious. In other words, knowledge, within civic education, allows people to have the power to combat political, social and economic situations that are not socially accepted and that are harmful.
Generally speaking, a "mixed" economic system can be characterized by some government involvement and private ownership of most business, since some government regulation ensures the protection of the consumers.