Two opposing forces have shaped the changing pattern of world trade over the last 200 years; the promotion of free trade and the protection against free trade. Trade protection is the process of erecting barriers to trade, such as taxes on imports, called tariffs, and trade liberalisation is the process of making trade free from such barriers.
The UK is an extremely open economy with a long history of promoting trade openness. By 2012, trade accounted for around 61.8% of the UK’s national income, although by 2016 it had fallen back to 56.5%.
Video courtesy of World Trade Organization; Rue de Lausanne 154; 1211 Geneva 21; Switzerland: Link: WTO Video
The advantages of free trade
It can be argued that free trade creates the following advantages:
Specialisation and comparative advantage
Free trade encourages countries to specialise and benefit from the application of the principle of comparative advantage.
Increased world output
If countries specialise and trade, world output is likely to increase as scarce resources will be used more efficiently. Mass production will generate considerable economy of sca