Answer:
One cultural change is the technology used by Egyptians. Their geometrical knowledge allowed them to build great buildings.
Another cultural change is the papyrus in Mesopotamia, this artefact meant a huge advanced in that civilisation, which also change the way that they culturally record and passed the knowledge.
A third cultural change is the gunpowder by the Chinese people, this change war rules, and the way they craft their weapons and armour.
Usually, cultural changes is due to the technology, these examples are about it, like the internet in the present time.