What, in addition to geographic boundaries, might have kept the people of the Huang River civilization from traveling to far-distant regions? (4 points) A. They feared that their bronze weapons would be no match for the iron weapons of ancient Egypt.
B. They could get everything locally that they needed to survive and grow.
C. They had learned about the other river valley civilizations but feared contact would bring invasion.
D. They had not yet developed a system of money based on coins.

They could get everything locally that they needed to survive and grow.

So It would be (B).

Hope I helped.

pepin the short[a] (german: pippin der kurze, french: pépin le bref, c. 714 – 24 september 768) was the king of the franks from 751 until his death. he was the first of the carolingians to become king.[b][2]

the younger son of the frankish prince charles martel and his wife rotrude, pepin's upbringing was distinguished by the ecclesiastical education he had received from the monks of st. denis. succeeding his father as the mayor of the palace in 741, pepin reigned over francia jointly with his elder brother carloman. pepin ruled in neustria, burgundy, and provence, while his brother carloman established himself in austrasia, alemannia and thuringia. the brothers were active in suppressing revolts led by the bavarians, aquitanians, saxons, and the alemanni in the early years of their reign. in 743, they ended the frankish interregnum by choosing childeric iii, who was to be the last merovingian monarch, as figurehead king of the franks.

peace keepers

idealism to be spread

riches kept