A key factor of the empires the United States and European countries built in the late 1800s was: nationalism. ... The United States wanted to assume its place as a world power.
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The answe is C. a sharp division among the faithful as to how future leaders should be selected, and what their qualifications should be.
Well, technically the religious unity never ended. I am not religious, but religion has been and will be apart of our society for as long as we can imagine.