Westphalian System: The Peace of Westphalia is a series of peace treaties signed to symbolize the end of the Thirty Years' War. The two parties were the Habsburgs who ruled Spain, the Holy Roman Empire, Austria, and France.

Sweden and the vassal states of Brandenburg, Saxony, and Bavaria in the Holy Roman Empire.

The Peace Treaty of Westphalia, signed on October 24, 1648, officially confirmed the series of peace treaties in Westphalia and symbolized the end of the Thirty Years' War.

Most historians regard the Peace of Prague in 1635 and the Peace of Pyrenees in 1659 as one of the series of Westphalian peace treaties.

?Vienna System: On the basis of sanctioning France, the victorious European feudal monarchs held the Congress of Vienna and determined the European feudal ruling order and national system.

We call it the Vienna System.

After the Vienna System, Britain regained control of Europe and achieved a balance of power in Europe. The center stage of world international relations still remains in Europe.

This European dominance lasted until World War I.

Versailles-Washington System: After World War I, the imperialist peace system established by the victorious powers such as Britain, France, the United States, and Japan through the Paris Peace Conference and the Washington Conference.

The Washington Conference was essentially a continuation and supplement of the Paris Peace Conference. The victorious imperialist countries took a dominant position. For the first time, the non-European powers the United States and Japan participated in dominating world affairs in order to infringe on China's rights and interests. Finally, imperialism completed its role in the first world

The re-division of the world after the Great War established the post-war multipolar structure among imperialist countries, the Versailles-Washington system.

?Yalta System: The main contents of the Yalta System were determined at the Cairo Conference, Tehran Conference, Yalta Conference and Potsdam Conference.

In principle, we advocate peace and democracy, the most important of which include: dealing with defeated countries and preventing the resurgence of fascism; redefining the political map of post-war Eurasia, redrawing the boundaries of fascist defeated countries and their occupied areas; establishing the United Nations, etc.

etc. ?Bretton Woods System: In the 50 years in the second half of the 20th century, the General Agreement on Tariffs and Trade, the World Bank, and the International Monetary Fund were considered the three pillars supporting the world's economic, trade and financial structure.

These three pillars actually originated from the Bretton Woods Conference held in 1944.

The latter two are often called the Bretton Woods monetary system.

?The two institutions born out of the Bretton Woods Conference - the World Bank and the International Monetary Fund - still play a crucial role in the world trade and financial landscape.

The international system is an organic and unified whole formed by the mutual influence and interaction between various international actors in the international society.

International actors are divided into two categories: state and non-state.

Interaction and interaction are mainly manifested as conflicts, competition, cooperation and dependence between actors.

The basic state in the international system is anarchy.

The international system gradually developed with the global expansion of capitalism.

Capitalist colonial behavior connected previously isolated regions around the world, and was ultimately formed with the final establishment of the world colonial system at the end of the 19th century and the beginning of the 20th century.

The international system is divided into two categories: local structural level and overall structural level based on geographical scope and scale.