The United States is a country built by immigrants from various countries around the world.
In 1820, immigration to the United States was only around 8,000 people per year, but at the end of the 19th century, the number increased to around 1 million people per year.
In 1924, the United States Congress endorsed the Immigration Law which limits the number of immigrants from certain countries, such as China and Japan.
During the period between 1892 and 1954, around 12 million immigrants entered the United States through the Port of Ellis Island in New York City.
Many immigrants who came to the United States in the 20th century were Jews and Italians.
During the great depression in the 1930s, many immigrants were sent home to their home country because of the difficulty of finding work.
In 1965, the United States Congress endorsed the Immigration and Citizenship Law which eliminated the limitations of the number of immigrants from certain countries.
Many immigrants who came to the United States in the 21st century came from Latin America and Asia.
According to the 2010 census, around 40 million people in the United States are immigrants.
Immigrants in the United States have contributed to various fields, such as art, culture, politics, and economy.
