Oh, and Before That, Romulus Blew Up. Worry About That, But Only a Little Bit.

Picard as an entirety is actually set after the events of the opening of the 2009 Star Trek movie. That film, before it established the alternate Kelvin timeline, opens having been set in the primary Trek continuity, where the homeworld of the Romulans, Romulus, was destroyed in a cataclysmic event where the system’s star went supernova. Picard was involved in attempts to evacuate Romulans from the system before the supernova, but things went badly, and the remnants of the Star Empire cast a large shadow over Picard’s first season.
It’s probably less important now for season three, but, y’know. Good worldbuilding stuff to remember.