the law of self-interest the law of competition the law of supply and demand
The key element from a market economy that has replaced the barter system would be affiliate marketing. This is a performance-based form of marketing.
household and firms
free market economy
they determine what goods and services are produced
Brazil's economy is based largely on farming and agriculture. It is, by and large, a free market economy, but there is heavy government subsidization in key industries such as aeronautics (Embraer, for example).
False Catastrophism is not the idea that the present is the key to the past. Uniformitarianism is the idea that the person is the key to the past.
by developing, supporting, or explainig the stated key idea
As of July 2014, the market cap for KeyCorp (KEY) is $12,145,389,162.50.