Final answer:
Distance is an example of a natural trade barrier.
Step-by-step explanation:
An example of a natural trade barrier is distance. When two countries are far apart geographically, it becomes more difficult and expensive to transport goods between them, which can create a barrier to trade. For example, if a country has to ship goods across an ocean to reach another country, it may have to incur high shipping costs, making the trade less competitive.
Learn more about Natural trade barrier