Doctor Doom brought an end to hunger and disease during the late 20th century, so the world followed his leadership from then on. Everyone who resented and eventually thought of revolt were killed or happened to dissappear. Some were even recruited into the Four Fantastics.
The Exiles show up and half of them help to liberate the planet alongside Reed Richards so that Doom wouldn't eventually conquer the Multiverse. Richards eventually decide to destroy this reality's Earth in order to stop Doom.
(Baxter Building, Fantastic Four (Hulk, Victor von Doom, Johnny & Sue Storm), Ben Grimms, Grimms, [Marx Sisters], Mole Man, She-Hulk, Gwen Stacy, Subterranea)