Which of these factors or issues do you consider most important and why?

Compare and contrast Presidential and Radical Reconstruction. Why do you think Presidential Reconstruction failed? Why did Radical Reconstruction fail?
Discuss the role played by immigrants in the development of the United States following the Civil War through 1900. In your answer, consider political, economic, social, and cultural factors. Also, don’t forget to discuss the nativist reaction to the growing number of immigrants entering the United States in the later 19th century. What were some of the reasons given by nativists against immigration and what were some of the tools and methods used by these nativist groups to achieve their goals? Finally, a hint: Don’t stretch yourself too thin. Concentrate on one or two important details and discuss them in depth.
Discuss US imperialism during the later 19th and early 20th centuries. What were some of the factors that influenced the decision to acquire foreign territories? Evaluate the arguments supporting and opposing imperialism. Which of these factors or issues do you consider most important and why? Remember to ground your conclusions in concrete evidence using historical sources. Maintain objectivity.