An economy is a complex system of interrelated production, consumption, and exchange activities ... in order to understand why they make the economic decisions they do and how these decisions ...

An industry is any economic activity which creates jobs and generates income. There are four main types of industry: primary, secondary, tertiary and quaternary. The type of industry a country ...

Any increase in demand has to come from one of these four ... According to Keynesian economics, state intervention is necessary to moderate the booms and busts in economic activity, otherwise known as ...