What was the effect of the Surpreme Court's ruling in Citizens United v. Federal Election Commission?

The Court's ruling effectively freed corporations and unions to spend money both on "electioneering communications" and to directly advocate for the election or defeat of candidates (although not to contribute directly to candidates or political parties).

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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a. poison gas was sprayed over battlefields by airplanes to weaken enemy positions before major attacks.