Where did 80 percent of immigrants of the United states come from by 1907?

By 1907, approximately 80 percent of immigrants to the United States came from Europe, particularly from countries such as Germany, Ireland, Italy, and Poland. This large influx was driven by factors such as economic opportunity, political unrest, and religious persecution in their home countries. Many arrived through Ellis Island in New York Harbor, which became a primary entry point for millions seeking a new life in America.