What do you think constitutes the difference between a river valley civilization and a classical civilization

they protect them in many ways.

most build a museums

give the museums money to support and finace and advertise there relgion.

cultivate talents such as cultural relics management and cultural relic protection and restoration.

codfish influenced the yankee trade because they traded it with the americans and the americans traded livestock, molasses and stuff that they can make clothes out of (like wool, and leather). they also could make weapons to.