Analyze the main factors that make the United States an immigrant country. The answer is: religion; Vast territory, superior natural environment and resource conditions. ...

In the past century, it can be said that the United States sent the largest number of propaganda classrooms, and the cost of missionary work was more than the military expenditure. Too many missionaries died in other countries, and too many missionaries settled in other countries. It can be said that this part of immigrants is the main factor for the United States to become an immigrant country and the only important factor for the United States to become a world power. In line with god's will!