I'd say the biggest change is the fact that we live in a world where we can all see and be part of the change.
For the vast majority of history just about everyone lived in one tiny area with almost all of their information concerning just that area.
It's really only been the last 150 years where most (western) people have lived in a global world. Say the last fifty years for the rest of the world.
I remember one writer saying about the Rennasance that in England they barely knew it was happening. It wasn't common knowledge there until it had been over for a few centuries.
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