/kloc-Before the 7th century, only Indians and Eskimos lived in the vast wilderness of North America, but after more than 100 years of immigration, this place has become the new home of all ethnic groups in Europe, of which the most important state 13 was a British colony, and the colony of 13 declared its independence from Britain. After consultation and reform, the American federal system officially entered the world stage on the eve of the French Revolution. Early America welcomed foreign immigrants, and these immigrants made her grow rapidly. The population of the United States was only 300 million in 1776, but now it exceeds 200 million. In the process of rapid population growth, new living space has followed and been continuously explored, while Xinjiang pioneers extending from east to west are not only engaged in animal husbandry, but also looking for minerals and other resources. In the 20th century, the United States has not only become a world power, but also an advanced country in science, technology, medicine and military.

Brother, do your best and give points!