[Abstract] Academic interests in communication studies are increasingly extensive nowadays, with growing prominence of interdisciplinary integration. The overall trend is to try to reveal the mechanism of the world's cooperative communication of human society, and answer how society operates. This paper attempts to take the rise of the United States in the first half of the 20th century and the resulting changes in international relations, especially the rise and fall of the US relative to Britain representing European traditional hegemony, as the research sample. From the perspective of international communication and cooperation, it interprets interactions between nations, focuses on national discourse subjects' communication, cooperation and game with "others" through international exhibition platforms, and the role of international exhibitions in constructing national relations. It hopes to further delve exhibition communication function research into the national strategic level, discuss the historical inevitability of great powers leveraging exhibition communication tools during their rise, and open up a dimension of international communication research on exhibition activities.

In selecting the research object, the primary consideration is the historical context. The 20th century is often referred to as the "American Century". The process of the US rising to hegemony occurred mainly in the first half of the 20th century. Historians call it the rise of US hegemony. Its beginning was marked by victory in the 1898 Spanish-American War and the "Open Door Policy" of external expansion; its ending marked by victory in World War II in 1945, when the US established the modern world political and economic order dominated by itself through the Yalta system and Bretton Woods system.

The evolution of this history was different from previous power transfers between old and new world hegemons that ultimately relied on military confrontation. The US attached great importance to participating in or hosting international exhibitions, and achieved its strategic rise through peaceful gaming means, avoiding military conflict or colonial contention with Britain's status quo hegemony. Accordingly, this paper takes the role and functional mechanism of international exhibitions in replacing modern international order and transferring the power center as the core issue, focusing on discussing why the US attached particular importance to exhibition activities in its four stages of rise, and always regarding them as a major tool to realize national strategy; and delving into how the US adopted exhibition communication methods with different functional priorities under different historical conditions, which strongly advanced the strategic goal of national rise.