Answer:
The most suitable answers are,
- Permanent settlements were established.
- Communities could store a surplus of food.
Explanation:
The major changes, or the revolutionary changes were the transition of the human society from a Hunter-Gatherer state to an agricultural civilization. Because of this, the Normadic and travelling nature of people gradually changed and the people settled in agriculturally resourceful areas, paving the way to the oldest civilizations to emerge!
Well, they prefered gold and silver because the Chinese did not want inferior european trade goods, so European traders had nothing else to offer.
The only thing I could come up with is consent of the governed. I'm not sure if this is right. But I hope this helps anyways.
