chess Era
Working backwards.
I hate to say this, but it is true. If you search for "chess" in Google, Chess.com pops up. We are in an era where Chess.com is emerging as almost synonymous with chess, like UFC for MMA.
This is bad.
Before that, it was the Age of the Internet, beginning with Yahoo Chess.
Before that, it was it was the Age of Computer starting with Chessmaster 2000.
Before that it was always The Cold War starting with the Soviet Union's dominance in chess.
Before that, nobody really knows, it's so far back.