Politically: At first, there was no such country as the United States. They were only 13 colonies of Britain, and then the United States was established through the war of independence of 1775- 178 1. 1787 The Constitution establishes a democratic and decentralized federal state in the United States. 1789, Washington became the first president of the United States.

Economically: First, it belongs to British colonial economy, the northern part is capitalist industrial and commercial economy, the middle part is rich in wheat, which is the main grain producing area, and the southern part is slave plantation economy.

After independence, the northern part of the United States is a capitalist industrial and commercial economy, and the southern part is a slave plantation economy, but both belong to the capitalist economy. And because of the independence of the country, the independent American capitalist economy has developed rapidly.

Extended data:

From the Cold War to the New Century

Drastic changes in the Soviet Union and Eastern Europe

199 1 year, with the disintegration of the Soviet Union, the United States became the only superpower in the world. The ideological barrier between the two camps in the world has also been broken.

In 1990s, American computer industry developed rapidly, which promoted the global high-tech information industry and started a new generation of industrial revolution. In the late 1990s, under the leadership of the United States, NATO expanded eastward. 1999 In early 1999, the United States led NATO to launch air strikes against Yugoslavia.

Baidu Encyclopedia-American History