Experienced a wave of immigration.

1, the American nation was formed relatively late.

When the East and the West basically formed some unified nation-states, the American nation could no longer find its shadow. The formation of this nation originated from the immigration tide after the era of great navigation, and many people immigrated to North America to gradually form such a nation.

In contrast, other ethnic groups have long existed. The Chinese nation has 5000 years.

2. Territorial issues and the inheritance of civilization.

The people who once lived here are indigenous Indians and have their own traditional culture. Immigrants (colonists) brutally destroyed Indian civilization in order to open up living space for themselves.

Judging from the continuation of civilization in North America, the United States can be said to be a country without history.

3. National culture.

American culture is also mostly the product of the intersection of western European cultures, because immigrants are British, French and so on.

In fact, the United States is the product of this multicultural intersection. You can also find many traces from it now.

4. Real North American immigrants formed political and administrative units and nation-states later.

This is also very important.

The ancestors recognized by Americans are Mayflower immigrants from/kloc-0 to September, 620. Britain is an Anglo-Saxon, and it has been a long time. France and other European countries also established a nation-state earlier, or the nation was born before the formation of a unified country (such as Germany); China has a long history. The United States issued the Declaration of Independence on July 4, 776, and it was not recognized by Britain until 1783. With such a comparison, the time gap comes.

5. Time.

The American country has been formed for 300 years. America has just celebrated its 234th anniversary.

This time is relatively late. It can be said that the history is relatively short.

In addition, this sentence itself is problematic and cannot be used as a formal explanation. The history of 200 years is also history, and any nation or country in the world has experienced a long road of development.