Introduction to Sociology/Economy

History

The history of economy starts a long years ago. For most people the exchange of goods occurred through social relationships. From here we can see the economy began.
The ancient economy was mainly based on farming. however over time economy was based on coin (ex. gold and silver coin). Talking here of the ancient times.
In the Middle Ages. Economy develop very big. Most exchange occurred within social groups. In other words, Jump over the personal exchange. The discoveries of Marco Polo, Christopher Columbus set the foundations for a global economy. In this era The first economist in the true meaning of the word was the Scotsman Adam Smith. He defined the elements of a national economy : products are offered at a natural price generated by the use of competition - supply and demand - and the division of labour.
The concept of tariff and tax occurs, people adapt this law.
Seen In summary the development of the economy, the scope of the concept of economy has become bigger and bigger.

Opinion

The economy is more complex than I thought, but also a difficult and spacious, it is the content that there is only fun it

Question

If there is a point you want to question one, the development of the economy, that how it is great progress in this way, if by chance it is defined indeed by any people, if necessary Is it a coincidence or the inevitable to be worried about it if there is.