The answer is reserved powers
Because you have to have a problem to start with in order to reach a solution.
Because it helped pave the way for a later all-out offensive.
<span>The Barbarian attacks on Rome partially stemmed from a mass migration caused by the Huns' invasion of Europe in the late fourth century. When these Eurasian warriors rampaged through northern Europe they drove many Germanic tribes to the borders of the Roman Empire</span><span>
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