"<span>C) It held homesteaders responsible for contributing to the completion of the transcontinental railroad" is not true, since the act had to do only with land acquisition.
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The Open Door Notes - sent by U.S. Secretary of State John Hay in 1899 to open up Chinese ports to American merchants. European powers had "spheres of influence" in different port cities throughout China, and the United States wanted access to China's markets.
The native americans thought the french was less a threat and the french also treated the native americans with more respect.
