Answer:
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A secondary source conclusion is valid.
<span>These achievements refer to contributions of the "Persian Empire" but it should be noted that all of these civilizations have made contributes in these fields at some point. </span>
Serbs(ANSWER A) ethnic group wanted to break from from Austrian control before world war 1 and form their own state.This was between 1912 and 1913.Serbia were receiving support from Russia which created a threat to Austro- Hungarian empire.Serbian wanted to be free and hence not to be controlled by other nations,
The Pope was the closest to God.