The answer for this would be " obligation of the states "
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160 ounces.
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Answer:
Number One:
The Tang ruled China between the seventh and tenth centuries.
The Song dynasty ended in 1279.
The Song dynasty lasted more than 300 years.
Number Two:
It was a time of harmony, stability, and achievement.
Number Three: the vulnerability to invaders from the north
Number Four: I'm Not Sure
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