I believe many people are not unfamiliar with the term "international trading system", but some people really ask you, what does the international trading system mean? You may find that you cannot find an expression that can be used to explain this noun.
In fact, we only need to know what the word "system" actually means to explain the term. In fact, "system" refers to a whole composed of similar things according to a certain order and internal relations. To put it simply, the international trading system refers to a whole formed by countries following a certain order and internal relations in international trade.
Why do we need to pay attention to and understand the international trading system? It starts with the relationship between international trade and economy. As shown in the figure below, in the past 2000 years, the per capita GDP of the world had hardly changed in the first 1500 years, but it began to rise around 1496, and after 1886, "rocket growth" began.

As we all know, the "great geographical discovery" appeared around 1496, and the trend of globalization began from then on. It was precisely because of the great geographical discovery that international trade began to increase, which began to change the development of the world economy. Is there no international trade before 1496?