Answer: War
Explanation: War was one factor in the decline of Rome.
Answer:
A: It is what our government is based upon.
Explanation:
Basically, we can eliminate B since the Constitution is just within the US. C doesn't make sense becuase the Constitution has been amended multiple times, and D does not work becuase the Constitution does not mention political parties.
The answer is A becuase the Constitution outlines the foundation and basis of America including core values & base-level ideologies/laws.
The answer is c the discovery of oil
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The dutch did not help spread Christianity to the east