Answer:
Imperial monopolies provided peace and stability
Explanation:
The disintegration of the Roman empire freed Europe from rule by a single power. Imperial monopolies provided peace and stability, but by seeking to preserve the status quo also tended to stifle experimentation and dissent.
The answer is D. Its the only one which would make sense.
The effect of US government policies during the 1920s is that US national debt declined.
C, Yorktown because the French went to Yorktown to join the colonists and fight with them