>>149426764
Different alternate reality. That was Age of Apocalypse.
I'll spoon feed ya .
Age of Apocalypse (1995) is a nightmare present that spins out of Legion Quest, where Legion goes back in time and accidentally kills Professor X, and with the absence of the X-Men, Apocalypse takes over America.
The 2nd event is Age of X in 2011 is a nightmare version of Utopia area X-Men and Civil War, where Jean loses her powers and blows up a town, mutants are hunted and now live in a single fortress as they fight off waves of human aggressors led by the Avengers
Age of X-Man (2019) as the X-Men are being killed off throughout X-Men Disassembled X-Man, Nate Gray transports all the mutants to a Utopian alternate reality that looks like the 1950's, this story immediately precedes the Krakoa era

The Age of stories are filler arcs designed around making new costumes for everyone and promoting lesser used X-Men. AOA boosted Blink, who was killed off a year earlier and Sunspot and Iceman with major league power upgrades
AoX, Pixie, Tempo and Frenzy were brought up to C-Listers and gave us the protagonist heroic version of Legion
AoX-man was about reintroducing the readers to the real Jean Grey, who just came back to life and her dynamic with the rest of the team in a story without Wolverine and Cyclops, but Nature Girl was promoted from background character to c-lister who get featured regularly to this day.