1) Discuss the new immigrants of the late 19th and early 20th centuries. Who were they and how did they differ from previous immigrants to the U.S? what factors, both in the U.S. and aboard, affected immigration during the time period (push/pull)? how did the majority of "native-born' Americans reacts to the new immigrants, and why? what impact did the new immigrants have on the changing nature of American society at the time? make sure to provide examples to illustrate your points.2) discuss and explain the domestic issues and factors that lead to U.S imperialism in the 1880-1900 period. How did U.S imperialism differ from Old World, European imperialism? Additionally, explain the justification or rationale that the U.S gave for this expansion. What was the Open Door Policy and why did the United States pursue it? be sure to provide concrete examples ( at least three) to support your explanations.3) the years between the turn of the 20th century and the beginning of World War I are known as the Progressive Era in American history. What was Progressivism and why did it occur when it did (during and following the so-called Gilded Age)? was the Progressivism one coherent movement, or made up of multiple, often competing and /or conflicting movements? explain and give examples of at least three different strains of Progressivism.