what's an economy? how does it work?

Answer :

What is an economy:

The wealth and resources of a country or region, especially in terms of the production and consumption of goods and services.

How does it work:

The three principles that describe how the economy as a whole works are: (1) a country's standard of living depends on its ability to produce goods and services; (2) prices rise when the government prints too much money; and (3) society faces a short-run tradeoff between inflation and unemployment.

Hope this helps :)