I've found that it is fairly easy to get normal or even golden ages in the early game, since you get enough era points: goody huts, discoveries, building unique units for the first time etc.
However in my experience it is much harder to get even a normal age in later times (medieval+). So, several times now I've spent the industrial+ ages in a perpetual dark age. (which is even graphically annoying since the map turns a darker shade...I suppose there's an option to turn this off but haven't checked yet).
What are your strategies to earn enough points to get normal/golden ages in the later game?
However in my experience it is much harder to get even a normal age in later times (medieval+). So, several times now I've spent the industrial+ ages in a perpetual dark age. (which is even graphically annoying since the map turns a darker shade...I suppose there's an option to turn this off but haven't checked yet).
What are your strategies to earn enough points to get normal/golden ages in the later game?