How did immigration affect immigrants and other Americans around the year 1900?

immigration affected immigrants and other Americans around the year 1900 is after the depression of the 1890s, immigration jumped from a low of 3.5 million in that decade to a high of 9 million in the first decade of the new century. Immigrants from Northern and Western Europe continued coming as they had for three centuries, but in decreasing numbers. After the 1880s, immigrants increasingly came from Eastern and Southern European countries, as well as Canada and Latin America. By 1910, Eastern and Southern Europeans made up 70 percent of the immigrants entering the country. After 1914, immigration dropped off because of the war, and later because of immigration restrictions imposed in the 1920s. (did that answer your question?)

a historian researching the immigration policies of the early 1900s would expect a source written today,rather than in 1910 to :

( a ) be more interested in objective data and statistics.