Which situation prompted the Supreme Court to issue these rulings? A Congress attempted to control labor union activities.
B The federal government tried to expand civil liberties.
The federal government attempted to regulate the economy.
D Congress tried to pass laws restricting antitrust activities.
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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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