The split is reversed (jan 1, 88 – jan 1, 88)
A group of Thanos' closest disciples including his two daughters and the Partisans revolt against him, killing him and taking the stones to the Avengers. They undo the split with the sacrifice of Captain America and separate them across the galaxy. The Avengers leave the Republic as they know the Republic will try to use the stones. They swear to defend them and make sure they are never used, as Thanos' daughter Hela is giving off an Asguardian curse via the stones. The Partisans return to their ways before Thanos.
Added to timeline: