Answer :Free trade means that when there is no restrictions on
import or export . There is no tariff or quotas exist in an
economy. An economic reasons for applying Free trade in an
economic:
- Free trade helps to drive economic growth of an country.
 
- It helps in increasing innovation
 
- Free trade helps to achieve comparative advantage. A country
should produce that product which cost is less and increases
economic welfare.
 
- It has lead to trade creation as there is no restrictions.
 
- Lower price of the goods
 
- Increases competition
 
- If the country is specialised in particular goods than they
achieve economic of scale and lower average cost.
 
- Trade is an engine of an economic growth
 
- Efficient in production.
 
- Increased competition
 
Free trade are restricted by countries because
- With the removal of tariff and quotas , structural unemployment
may occurred in an economy.
 
- Instability in an economic has been arised
 
- Domestic small new firm feel it difficult to survive in an
competitive environment.
 
- It can lead to inequality in nation.
 
- It can causes unemployment in an economy because big
businessman switch over there product to an area where labour is
cheap.
 
- It can cause environment problem such as global warming
 
- Sometime economic growth start declining.