The Messerschmitt 262, of Nazi Germany was the world's first operational jet-powered fighter aircraft
Americans who advocated annexation evinced a variety of motivations: desire for commercial opportunities in Asia, concern that the Filipinos were incapable of self-rule, and fear that if the United States did not take control of the islands, another power (such as Germany or Japan) might do so.
The question is asking to choose among the following choices that made Americans so willing to engage in stock market speculation in 1920s'. Based on my research and further understanding, I would say that the answer would be Speculation helped many low-income people move to the middle class.
Public life responsibilities and duties could be divided in two groups which are Social and Professional responsibilities.
Social responsibility is the must that a community member have to promote the welfare of all the people around them while the professional responsibility is to put the knowledge for the common well, knowing the possible risks that a technical decision will have as a consequence for the community.
