1177 is interesting. It is also near the beginning of the Iron Age and all those mythical magical gift from the gods weapons sound like meteoric iron to me.

Renewable energy seems to be highly local, started with roof top solar in some places. If you can make your power locally your local economy benefits. Then we get vertical farms that will eventually feed everyone on the planet, and in space. Then we toss in 3D printing so that most stuff gets made locally...

I see a return to city states being the dominant political/economic entities for a while.