Lexicus
Deity
I'm sure this is fairly cliche, but one thing I like doing is imagining real-life events in Civ terms.
Bronze Age collapse=one of those barb-spawning events took out Egypt, Mycenae, etc.
Mongols Keshik rushed China.
China obviously discovered philosophy ~470 BC.
Rome discovered Theology ~35 AD.
Spain circumnavigates the Earth in 1522 AD.
England use Liberalism to slingshot Steam Power to get a tech lead
In the Franco-Prussian war Bismarck researched Artillery when France still just had cannons
Russians didn't take Warsaw until the turn after it had a slave revolt.
Bronze Age collapse=one of those barb-spawning events took out Egypt, Mycenae, etc.
Mongols Keshik rushed China.
China obviously discovered philosophy ~470 BC.
Rome discovered Theology ~35 AD.
Spain circumnavigates the Earth in 1522 AD.
England use Liberalism to slingshot Steam Power to get a tech lead

In the Franco-Prussian war Bismarck researched Artillery when France still just had cannons

Russians didn't take Warsaw until the turn after it had a slave revolt.