A. sending soldiers to the South to enforce antidiscrimination laws" was a way in which the federal government safeguarded blacks' civil rights during congressional Reconstruction
The answer is C. Alexander the Great, a famous ruler and conqueror whose expanded his empire by conquering lands like the Persian Empire, Egypt, and Mesopotamia.
The ballot initiative process gives California citizens a way to propose laws and constitutional amendments without the support of the Governor or the Legislature.
There is no key to civilization. The concept that native americans did not have a civilization or were not civilized is one only supported by the egotism and arrogance of the empirical profit oriented "conquerers" who have worked to eradicate all cultures that conflict with profits. The key to western civilization that allowed them to kill off the majority of the natives was a lack of respect for life and insane drive for control, ownership and dominance, to which the peaceful and sophisticated Natives would not stoop.