Although the history of the United States is not long, why can it become the world hegemon?

The reasons why the United States has become the world hegemon soon after its history are as follows:

1, World War II, the United States became the main force on two battlefields in Europe and Asia. On the eastern front of Europe, Stalin also said that it is inconceivable to defeat the German fascists without the strong assistance of the United States. As for the Pacific battlefield, the United States alone wiped out the Japanese navy and air force and the main force of the Japanese army.

The United States has no intention to intervene in disputes in other parts of the world by military force. As soon as War of Resistance against Japanese Aggression ended, the United States withdrew from its particularly close cooperation with Britain and cancelled the organization of the Joint Chiefs of Staff of the Allies. Even in the occupied areas of Germany, they have their own way.

The United States took advantage of Napoleon's difficult situation in the Anglo-French War and threatened to unite Britain to resist French laws. It bought Louisiana from France for only $654.38+05 million, covering an area of about 2/kloc-0.50 million square kilometers, which doubled the territory of the United States, and the cost of buying this land was only about 3 cents per acre.

The United States incited Mexican planters to revolt and sent troops to occupy Texas, which was originally Mexico. 1846 declared war on Mexico on the pretext of border dispute. Through this modest US-Mexico war, the United States seized about 2.3 million square kilometers of land, which exceeded the total area of France and Germany, including California, Nevada, Arizona, New Mexico and parts of Colorado and Wyoming, while the United States only paid Mexico $6,543,805 in the form of "compensation". Since then, the United States has become a big country spanning two oceans and gained the leading position of the United States.

The territorial expansion and development of the United States to the west has had a great impact on the political and economic life of the United States. The incorporation of the vast western land into the United States has made the United States a country with a vast territory and rich natural resources, and has extremely superior natural conditions for economic development. The doubled arable land area is located in the climate zone suitable for farming, which makes agriculture develop rapidly. The development of the western region has also led to large-scale railway construction and the influx of immigrants.