The answer is in the text of the passage
They could get everything locally that they needed to survive and grow.in addition to geographic boundaries, might have kept the people of the Huang River civilization from traveling to far-distant regions
Hope this helps!
Answer:
The power to interpret the law of the United States will be held by the U.S. Supreme Court, and the lower federal courts. Inferior courts will be created by Congress from “time to time.” The Constitution itself created only the Supreme Court, but allowed Congress to create other, inferior (lower) courts over time.
