The economy you described in your question is called a market economy. It has free markets and the production of goods and services are determined by the consumers.
In a working economy, it requires labor to attain natural resources to produce other resources. then once a city is built and currency is established, entrepreneurship is required to buy and sell goods. Lastly, capital is required to keep order in the population
A.) Kepler's first law of Planetary motion states "<span>that planetary orbits are elliptical in shape, with the Sun at one focus of the ellipse"
Hope this helps!</span>
