as I said my answer is global warming I'm saying this because when am going with it coz when ever global warming occurs it causes the increase in the world temperature and also the increase in the volume of water in oceans and seas so I spent no I'm saying this because in the last century people have been cutting down trees n swamp draining which causes global warming and it causes the rise in the earth temperature
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.