4.3.1.4d - Other trade barriers

Explain government legislation and domestic subsidies as trade barriers.

Use d - other trade barriers to connect the rule to the data and decision in the question.

This matters because d - other trade barriers determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply d - other trade barriers to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: d - Other trade barriers is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.