Trade protection - introduction
trade, referred to as protectionism because it is an attempt to protect domestic industries from foreign (often cheaper - for whatever reason such as low wage workers or exchange rate differences) competition.
The focus of the IB syllabus is on the ways countries try to restrict free trade as a contrast to the srguments for free trade.
Arguments for and against protectionism come later.
This is a very contentious issue and countries that ostensibly are in favour of freedom (USA, Europe, UK ) have very many unfair protectionist policies that are designed to stop free trade.